APA
(81999). Proceedings of the National Academy Of Sciences of the United States of America. : Blackwell Publishing Ltd.
Chicago
81999. Proceedings of the National Academy Of Sciences of the United States of America. : Blackwell Publishing Ltd.
Harvard
(81999). Proceedings of the National Academy Of Sciences of the United States of America. : Blackwell Publishing Ltd.
MLA
Proceedings of the National Academy Of Sciences of the United States of America. : Blackwell Publishing Ltd. 81999.