Não informado. (1980). Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences.
Chicago-Zitierstil (17. Ausg.)Não informado. Proceedings of the National Academy of Sciences of the United States of America. Washington: National Academy of Sciences, 1980.
MLA-Zitierstil (8. Ausg.)Não informado. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.