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Proceedings of the National Academy of Sciences of the United States of America Citation Generator
Generate references in Proceedings of the National Academy of Sciences of the United States of America from a DOI or link in seconds. CitApp renders this style with citeproc, the same engine as Zotero and Mendeley, so every comma matches the spec. Free for students, no sign-up to try.
What a Proceedings of the National Academy of Sciences of the United States of America reference looks like
Proceedings of the National Academy of Sciences of the United States of America is a numeric style: sources are cited with a bracketed or superscript number in the order they first appear, and the reference list is numbered to match.
Rendered live from the same engine CitApp uses in the app:
Journal article
1. L. S. Babonis, M. Q. Martindale, A novel regulatory gene network in cnidarians. PNAS 119, e2113701119 (2022).
Book
1. T. S. Kuhn, The Structure of Scientific Revolutions (University of Chicago Press, 1970).
Web page
1. IPCC, Climate change 2021: the physical science basis. (2021). Available at: https://www.ipcc.ch/report/ar6/wg1/ [Accessed 15 July 2026].
Journal article with 26 authors
1. C. R. Harris, et al., Array programming with NumPy. Nature 585, 357–362 (2020).
Proceedings of the National Academy of Sciences of the United States of America at a glance
Read from the style file and checked against the examples above.
- Used mainly in the natural sciences.
- In the text, the first source is cited as (1).
- For a paper with 26 authors, the reference list names only the first author and shortens the rest.
- First names are shortened to initials.
- The reference leaves the DOI out.
- Web pages include the date you accessed them.
- The reference list is numbered in the order sources are first cited.
- The style file was last updated in March 2024.
The guide this style follows: pnas.org
How Proceedings of the National Academy of Sciences of the United States of America compares with NLM/Vancouver: Citing Medicine 2nd edition (citation-sequence, brackets)
Where Proceedings of the National Academy of Sciences of the United States of America differs:
- For a paper with 26 authors, the reference list names only the first author and shortens the rest.
- The reference leaves the DOI out.
The same journal article in NLM/Vancouver: Citing Medicine 2nd edition (citation-sequence, brackets)
1. Babonis LS, Martindale MQ. A novel regulatory gene network in cnidarians. PNAS. 2022 May 3;119(19):e2113701119. doi:10.1073/pnas.2113701119
Frequently asked questions
How many authors does Proceedings of the National Academy of Sciences of the United States of America list?
For a paper with 26 authors, the reference list names only the first author and shortens the rest.
How does Proceedings of the National Academy of Sciences of the United States of America handle DOIs and web pages?
The reference leaves the DOI out. Web pages include the date you accessed them.
How is the reference list ordered in Proceedings of the National Academy of Sciences of the United States of America?
The reference list is numbered in the order sources are first cited.
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