Citazione Stile APA (7a Edizione)

WHALEY, W. G. (1964). Principles of biology.-- 3rd ed. Harper and Row.

Citazione stile Chigago Style (17a edizione)

WHALEY, W. Gordon. Principles of Biology.-- 3rd Ed. New York: Harper and Row, 1964.

Citatione MLA (9a ed.)

WHALEY, W. Gordon. Principles of Biology.-- 3rd Ed. Harper and Row, 1964.