Não informado. (1980). Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences.
Chicago-viite (17. p.)Não informado. Proceedings of the National Academy of Sciences of the United States of America. Washington: National Academy of Sciences, 1980.
MLA-viite (8. p.)Não informado. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 1980.
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