APA (7th ed.) Citation

Purchon, R. D. (1968). The biology of the Mollusca ([1st ed.].). Pergamon Press.

Chicago Style (17th ed.) Citation

Purchon, R. D. The Biology of the Mollusca. [1st ed.]. Oxford, New York: Pergamon Press, 1968.

MLA (9th ed.) Citation

Purchon, R. D. The Biology of the Mollusca. [1st ed.]. Pergamon Press, 1968.