APA aipamena

Kraus, D., & Perkins, O. E. (1974). Concepts in modern biology. Cambridge Book.

Chicago Style aipamena

Kraus, David, and Otho E. Perkins. Concepts in Modern Biology. New York: Cambridge Book, 1974.

MLA aipamena

Kraus, David, and Otho E. Perkins. Concepts in Modern Biology. Cambridge Book, 1974.