APA
(1987). Proceedings Of The National Academy Of Sciences Of The United States Of America. U. S. A: .
Chicago
1987. Proceedings Of The National Academy Of Sciences Of The United States Of America. U. S. A: .
Harvard
(1987). Proceedings Of The National Academy Of Sciences Of The United States Of America. U. S. A: .
MLA
Proceedings Of The National Academy Of Sciences Of The United States Of America. U. S. A: . 1987.