pnasnexus-citation

Documents

Use to get PNAS Nexus references right — note that PNAS Nexus accepts references in any readable style at submission (unlike flagship PNAS's strict numbered-by-appearance), so the job is internal consistency, completeness, resolvable in-text citations, and the [dataset] tag for data/software. Prepare a single consistent (preferably numbered) style for production; confirm the final style on acceptance.

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Reference Style (pnasnexus-citation)

When to trigger

References are inconsistent, incomplete, or mix several styles.
In-text citations don't all resolve to the list (or vice versa).
Datasets/software are cited as bare URLs rather than formal references.
You are about to submit and want the reference list clean.

The PNAS Nexus rule that surprises people: format-neutral at submission

PNAS Nexus states, verbatim, "You may format references in any readable style at submission." This is a deliberate contrast with flagship PNAS, which enforces a numbered, in-order-of-appearance style up front. So at PNAS Nexus, do not burn effort forcing a specific house style for initial submission — instead make the references clean, complete, consistent, and resolvable.

The final published reference style is 待核实 — OUP/PNAS-portfolio journals typically render a numbered, in-order-of-appearance list at production, but the official page only guarantees submission-stage neutrality. Prepare a single consistent numbered style (it converts cleanly to most production styles) and confirm the exact format on acceptance.

What actually matters at submission (the real checklist)

One consistent style throughout — pick a reference-manager style (a numbered/Vancouver or PNAS-style works well) and apply it uniformly; do not leave a mix.
Every in-text citation resolves to an entry in the list, and every list entry is cited — no orphans, gaps, or duplicates.
Complete metadata — authors, title, journal/venue, year, volume, pages or article number, and a DOI where one exists.
Author lists complete and accurate (avoid silent "et al." truncation in the list unless the chosen style requires it; reference managers often over-truncate — check).
Data and software cited as references with the [dataset] tag where the journal asks for it (see pnasnexus-data), not buried as URLs in the text.
Preprints clearly labeled as preprints with their repository/DOI.

A safe, convertible default (numbered, in order of appearance)

If you want one style that is clean now and converts easily at production, use numbered, in order of appearance:

In text: numbers in parentheses or brackets — (1), (2, 3), (4–6) — in the order references first appear.
A single numbered reference list in appearance order.
Each entry: authors, article title, abbreviated journal/venue, volume, pages/article number, year, DOI.

Reference formats (shape — confirm production requirements on acceptance):

Journal article: 1. A. B. Author, C. D. Author, Article title. J. Abbrev. Volume, page–page (Year). DOI.
Book: 2. A. B. Author, Book Title (Publisher, ed. X, Year).
Book chapter: 3. A. B. Author, Chapter title in Book Title, C. D. Editor, Ed. (Publisher, Year), pp. xx–yy.
Dataset: [dataset] 4. A. B. Author, Dataset title. Repository. Accession/DOI. Deposited DD Month Year.
Preprint: 5. A. B. Author, Title. Repository [Preprint] (Year). DOI (accessed DD Month Year).

Tooling

Use Zotero/EndNote with a numbered or PNAS-style CSL; do a final manual pass on completeness and author-list truncation (managers often truncate).
Verify every in-text citation resolves and the list has no gaps/duplicates; renumber after any reordering of the text.
Run a DOI-completeness pass — add DOIs wherever they exist.

Output format

【Submission rule】 references format-neutral at submission (PNAS Nexus) — make them clean, not house-styled
【Consistency】 one style applied uniformly? yes/no
【Resolvable】 all in-text ↔ list, no orphans/gaps/duplicates? yes/no
【Completeness】 authors / title / venue / year / vol / pages / DOI present? yes/no
【Data/software refs】 cited with [dataset] tag where required? yes/no
【Production style】 numbered-by-appearance prepared (convertible)? confirm final style on acceptance (待核实)
【Next】 pnasnexus-submission

Anti-patterns

Do not waste pre-submission effort hand-forcing a strict house style — PNAS Nexus accepts any readable style at submission.
Do not ship a list that mixes several styles inconsistently.
Do not leave in-text citations that don't resolve, or list entries never cited.
Do not cite datasets/software as bare URLs — use formal references with the [dataset] tag.
Do not assume the submission style is the final published style — confirm production requirements on acceptance.