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pnas-citation

Use to convert references to PNAS's numbered citation style — cited in order of appearance, a numbered reference list, full author lists, abbreviated journal titles. Provides formats for article/book/chapter/dataset/preprint and an author-date → PNAS conversion table. Late-stage style pass.

PNAS-Skills/skills/pnas-citation/SKILL.md

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# Reference Style (pnas-citation)

## When to trigger

- References are in author–date (APA/Harvard) or another journal's style and must become PNAS style.
- The reference list is not ordered by citation appearance.
- Author lists are truncated with "et al." in the bibliography.
- In-text citations are not numeric.

## PNAS citation mechanics

- **Numbered, in order of appearance** in the text, as numbers in parentheses: **(1)**, **(2, 3)**, **(4–6)**.
- A **single numbered reference list**, numbered consecutively in the order references first appear in the text.
- The reference list gives **full author lists** (PNAS does not truncate to "et al." in the bibliography for typical author counts — confirm any cap for very long lists).