Scientific style guides

Last updated: 2026-10-20

Synthesis

Style manuals are the procedural memory of scientific writing. They codify the thousands of small decisions — number formatting, citation form, unit abbreviations, capitalization conventions, terminology for human subjects — that journals enforce silently and that authors usually learn by being corrected. The major manuals overlap on the basics but diverge sharply on opinionated calls (Vancouver vs. name–year citations; serial comma; abbreviation of common terms; SI conventions).

For a system like scriptorium, style guides matter at two layers. They underwrite terminology-normalization and journal-style-conversion — skills that will eventually need to know “if target venue is JAMA, use AMA conventions; if PNAS, use a hybrid form.” They also constrain what a critique skill should not flag: an em-dash style preference is not a problem worth raising; an ambiguous statistical claim is.

The most important practical fact: every major journal publishes its own in-house overlay on one of these manuals. Following the manual gets you most of the way; the journal-specific instructions-for-authors cover the remaining differences. A scriptorium that wants to do style conversion seriously will need both layers.

Two of the manuals covered here were superseded in 2024: the CSE Manual is now in its 9th edition (May 2024) [2] and the Chicago Manual of Style in its 18th (September 2024) [3]. Venue routing that names an edition should use the current one.

Evidence and frameworks

AMA Manual of Style (medicine)

AMA Manual of Style: A Guide for Authors and Editors. 11th ed. Oxford University Press; 2020. ISBN-13 978-0-19-024655-6. [1]

The default for biomedical journals published by the AMA family (JAMA, JAMA Network Open, JAMA specialty journals) and the most-cited manual in clinical medicine. The 11th edition (March 2020) significantly expanded the chapters on statistics and study design, and revised the language guidance on inclusive terminology (e.g., person-first vs. identity-first language; updated guidance on race, ethnicity, and sex/gender reporting).

Scope: medicine, public health, clinical biomedicine. Citation style: Vancouver-style numbered references; specific AMA conventions for journal abbreviations (per Index Medicus / NLM). Opinionated calls: prefers active voice in methods; specific guidance on units (SI with conventional units where required); detailed rules on how to report p-values, confidence intervals, and effect sizes. Strict on abbreviation use — many common medical abbreviations require expansion at first use.

CSE Manual (general science)

The CSE Manual: Scientific Style and Format for Authors, Editors, and Publishers. 9th ed. Council of Science Editors and University of Chicago Press; 2024. ISBN-13 978-0-226-68394-2. [2]

The cross-disciplinary scientific manual, used widely in biology, ecology, earth sciences, and general life sciences. The 9th edition (May 2024) supersedes the 8th (2014; ISBN-13 978-0-226-11649-5, published as Scientific Style and Format: The CSE Manual for Authors, Editors, and Publishers). An online edition (The CSE Manual Online, csemanual.org) is maintained as the living reference. CSE’s own summary of what is new in the 9th edition lists “considerations for multilingual authors”, “overhauled recommendations on references to promote conciseness and searchability”, and “a new chapter covering topics such as scholarly journal metrics and artificial intelligence” [2].

Scope: general science (biology, ecology, earth sciences, chemistry adjacent fields). Citation styles: offers three — Citation-Sequence (numbered), Citation-Name (alphabetic numbered), and Name-Year (author-year). Journals pick one. Opinionated calls: specific rules on taxonomic nomenclature, gene and protein nomenclature, chemical naming, units (SI), and astronomical conventions. Generally less prescriptive than AMA on prose style; more prescriptive on naming conventions.

Chicago Manual of Style

The Chicago Manual of Style. 18th ed. University of Chicago Press; 2024. ISBN-13 978-0-226-81797-2. [3]

The general-purpose American English manual, dominant in humanities and social-science book publishing but not the primary reference for laboratory sciences. The 18th edition was published in September 2024 and supersedes the 17th (2017; ISBN-13 978-0-226-28705-8); installed copies and journal instructions that still cite the 17th should be treated as out of date. Some hybrid science journals (e.g., PNAS for some elements) follow Chicago conventions, and IEEE refers authors to Chicago for grammar and usage questions its own manual does not cover [6].

Scope: humanities, social sciences, trade non-fiction, university-press books. Citation styles: offers two — Notes and Bibliography (footnote/endnote style, humanities-leaning), Author-Date (parenthetical, common in social sciences). Opinionated calls: strong on punctuation conventions (serial comma is mandatory); detailed treatment of long-form prose conventions; less useful on technical/scientific notation than CSE or AMA.

ACS Style Guide (chemistry)

The ACS Style Guide: Effective Communication of Scientific Information. 3rd ed. Coghill AM, Garson LR, eds. American Chemical Society / Oxford University Press; 2006. ISBN-13 978-0-8412-3999-9. [4]

The default for chemistry journals published by ACS (JACS, J Phys Chem, Org Lett, etc.). The 3rd edition is now older (2006); ACS publishes The ACS Guide to Scholarly Communication (online 2019, print 2020; doi:10.1021/acsguide) [8], a continuously updated online reference that has effectively superseded the print volume for many practical questions. Crossref lists the 2006 Style Guide’s DOIs (the book DOI 10.1021/bk-2006-styg and its chapter DOIs) as aliases of the Guide to Scholarly Communication record.

Scope: chemistry and chemistry-adjacent fields. Citation style: ACS supports three formats — superscript number, italic number in parentheses, author-year — chosen per journal. Opinionated calls: extensive guidance on chemical nomenclature, reaction schemes, structural drawings, and spectroscopic data reporting. Specific guidance on figures, tables, and supplementary information for chemistry papers.

APA (psychology and social science)

Publication Manual of the American Psychological Association. 7th ed. American Psychological Association; 2020. ISBN-13 978-1-4338-3216-1 (paperback), 978-1-4338-3215-4 (hardcover), 978-1-4338-3217-8 (spiral-bound). [5]

The default for psychology, education, communication studies, and many social-science fields. The 7th edition (October 2019, effective 2020) overhauled the layout requirements, added formal guidance on bias-free language, and updated digital-source citation conventions.

Scope: psychology, education, social sciences, communication studies, some health sciences. Citation style: author–date parenthetical (Smith, 2020). Reference list is alphabetical. Opinionated calls: strong guidance on reporting statistics (specific formats for effect sizes, confidence intervals, p-values), heavy emphasis on bias-free language, specific format requirements for tables and figures.

IEEE (engineering, computer science)

IEEE Editorial Style Manual for Authors. IEEE Publishing Operations (updated periodically; no ISBN). [6]

IEEE distributes the manual online rather than as an ISBN-bearing book. The IEEE Author Center page now links to an online (Google Docs) version of the manual alongside the separate IEEE Mathematics Guide and IEEE Reference Guide [6]. When checked on 2026-10-20, that online version carried no overall version date (its only dated item is a section marked effective 1 April 2024). A PDF edition hosted on the Author Center has been indexed as “Updated 29 July 2024”, but the PDF could not be re-fetched in the 2026-10-20 check. Cite the manual by URL and access date.

The default for IEEE journals and most engineering/CS publications. The IEEE Editorial Style Manual is short and prescriptive; the ACM has its own parallel set of conventions.

Scope: electrical engineering, computer science, signal processing, robotics. Citation style: numbered references in square brackets [1], in the order cited. References listed in citation order, not alphabetically. Opinionated calls: abbreviation rules for journal names; formatting of equations and algorithms; figure caption conventions. Less prescriptive on prose style than AMA or APA.

Other significant manuals

• Vancouver (ICMJE Recommendations) — Recommendations for the Conduct, Reporting, Editing, and Publication of Scholarly Work in Medical Journals. International Committee of Medical Journal Editors, icmje.org [7]. This is the underlying citation form used by AMA and most biomedical journals.
• AAAS (Science family) — internal house style, derived from CSE with modifications.
• Nature house style — internal, derived from CSE with significant modifications.

How this informs scriptorium

Style is not where critique skills should focus their attention. A manuscript that needs structural surgery doesn’t benefit from being told its em-dash style is wrong. But style is exactly where normalization and conversion skills earn their keep.

• terminology-normalization (shipped). The shipped skill consumes only the preferred/forbidden/synonyms terminology declared in MANUSCRIPT_STATE.yaml; by design it does not impose a style manual’s rules, and leaves variety choices such as US/UK English to the venue (see the skill’s README). A possible future extension would add the relevant style manual’s standing guidance (e.g., AMA’s inclusive-language rules; APA’s bias-free language guide) as a separate layer. The preferred-terms list in state is project-specific; a style manual layer would be venue-specific.
• journal-style-conversion (planned). Needs a routing table mapping target venue → applicable manual → journal-specific overlay. A first cut: detect target venue, load the manual’s defaults, then apply journal-specific overrides from the venue’s instructions-for-authors.
• reference-format-conversion (planned utility). Mechanical conversion among Vancouver, author–date, and superscript numeric forms. This is the easiest style work to automate — citation styles are formally specified — and it should not interact with prose.
• reporting-guideline-compliance (proposed, see reporting-guidelines). Some reporting-guideline items are also style items (e.g., AMA’s statistical reporting conventions overlap with CONSORT and STROBE). The two validation layers should be kept distinct in output but routed consistently in input.

A note on posture: scriptorium skills should treat style choices as venue-dependent, not correct/incorrect. A skill that imposes Chicago conventions on a CSE manuscript is doing damage, not improvement. The target venue and applicable manual must be explicit in MANUSCRIPT_STATE.yaml for any style-aware skill to run.

Implementation priority for scriptorium

(Section added in the 2026-10-20 refresh; the note previously lacked one.)

Verdict: Yes (grounding only, no new skill) for terminology-normalization; Maybe later for journal-style-conversion and reference-format-conversion.

Yes — grounding: this note grounds terminology-normalization’s current design choices: preferred terms are project-specific and read from MANUSCRIPT_STATE.yaml rather than imposed by the skill, and variety choices are left to the venue. The shipped skill does not apply venue-manual rules and was designed not to.

Conditional, future behaviour (not shipped): if a venue-manual layer is ever added beneath the author’s declared terminology lists, it should be opt-in via an explicit venue and manual in MANUSCRIPT_STATE.yaml, and any venue-derived suggestion should name the manual and edition (e.g., “CSE 9th ed.” rather than “CSE”). The 2024 editions of CSE and Chicago mean any edition-specific rule such a layer bundles needs a version tag. Adding the layer would be a material change to the skill’s behaviour and would need its own design decision.

Maybe later — conversion skills: worth building only when MANUSCRIPT_STATE.yaml reliably declares the target venue and a machine-readable source of the venue’s rules is available. Condition that flips to Yes: authors ask for venue conversion on real manuscripts and the routing table (venue → manual → overlay) can be maintained without re-deriving it from prose instructions each time.

Why useful context anyway: the note fixes the posture that style is venue-dependent, which keeps critique skills from flagging style preferences as defects.

Open questions / weak evidence

• The major manuals do not agree on serial comma, em-dash usage, or abbreviation conventions. There is no neutral default; “default” is always “default for some venue.”
• Many manuals are revised on long cycles (AMA: 2007 → 2020; CSE: 2006 → 2014 → 2024; Chicago: 2017 → 2024; ACS: 2006 print guide, then the online Guide to Scholarly Communication from 2019). Practical advice often lives in journal-specific instructions rather than in the manual.
• The IEEE Editorial Style Manual is updated as an online document rather than as a bound book with stable ISBN; tooling that depends on stable references may need to track the manual by date/version.
• Online “living” manuals (ACS Guide; CSE Online) are now often more current than their print parents. For machine-readable rule extraction, the online versions are better starting points but harder to cite durably.

References

1. Christiansen S, Iverson C, Flanagin A, et al. AMA Manual of Style: A Guide for Authors and Editors. 11th ed. Oxford University Press; 2020. ISBN-13 978-0-19-024655-6.
2. Council of Science Editors. The CSE Manual: Scientific Style and Format for Authors, Editors, and Publishers. 9th ed. Council of Science Editors and University of Chicago Press; 2024. ISBN-13 978-0-226-68394-2. https://press.uchicago.edu/ucp/books/book/chicago/C/bo202437296.html; what’s new in the 9th edition: https://www.csemanual.org/info/9th-Ed-Whats-New.html (accessed 2026-10-20). Supersedes: Council of Science Editors, Style Manual Committee. Scientific Style and Format: The CSE Manual for Authors, Editors, and Publishers. 8th ed. 2014. ISBN-13 978-0-226-11649-5.
3. University of Chicago Press Editorial Staff. The Chicago Manual of Style. 18th ed. University of Chicago Press; 2024. ISBN-13 978-0-226-81797-2. https://press.uchicago.edu/ucp/books/book/chicago/C/bo213648716.html (accessed 2026-10-20). Supersedes the 17th ed. (2017; ISBN-13 978-0-226-28705-8).
4. Coghill AM, Garson LR, eds. The ACS Style Guide: Effective Communication of Scientific Information. 3rd ed. American Chemical Society / Oxford University Press; 2006. ISBN-13 978-0-8412-3999-9.
5. American Psychological Association. Publication Manual of the American Psychological Association. 7th ed. American Psychological Association; 2020. ISBN-13 978-1-4338-3216-1 (paperback).
6. IEEE Publishing Operations. IEEE Editorial Style Manual for Authors. IEEE; updated periodically, distributed online without an ISBN (the online version carried no overall version date when checked on 2026-10-20; a PDF edition has been indexed as “Updated 29 July 2024” but was not re-fetched). IEEE Author Center: https://journals.ieeeauthorcenter.ieee.org/your-role-in-article-production/ieee-editorial-style-manual/ (accessed 2026-10-20).
7. International Committee of Medical Journal Editors. Recommendations for the Conduct, Reporting, Editing, and Publication of Scholarly Work in Medical Journals. icmje.org (Vancouver style underlying document).
8. Banik GM, Baysinger G, Kamat PV, Pienta N, eds. The ACS Guide to Scholarly Communication. American Chemical Society; 2020 (online 2019; continuously updated). doi:10.1021/acsguide. ISBN-13 978-0-8412-3586-1 (print).