Não informado. (1915). Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences.
Čikaški stil citiranja (17. izdanje)Não informado. Proceedings of the National Academy of Sciences of the United States of America. Washington: National Academy of Sciences, 1915.
MLA način citiranja (8. izdanje)Não informado. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 1915.
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