Citazione Stile APA (7a Edizione)

Whaley, W. G. (1964). Principles of biology. Harper & Row.

Citazione stile Chigago Style (17a edizione)

Whaley, W. Gordon. Principles of Biology. New York: Harper & Row, 1964.

Citatione MLA (9a ed.)

Whaley, W. Gordon. Principles of Biology. Harper & Row, 1964.