Citazione Stile APA (7a Edizione)

Perrin, W. F. (1975). Variation of spotted and spinner porpoise (Genus Stenella) in the Eastern Tropical Pacific and Hawaii. University of California Press.

Citazione stile Chigago Style (17a edizione)

Perrin, William F. Variation of Spotted and Spinner Porpoise (Genus Stenella) in the Eastern Tropical Pacific and Hawaii. Berkeley, California: University of California Press, 1975.

Citatione MLA (9a ed.)

Perrin, William F. Variation of Spotted and Spinner Porpoise (Genus Stenella) in the Eastern Tropical Pacific and Hawaii. University of California Press, 1975.