APA (7th ed.) Citation

Keen, A. M. (1958). Sea shells of tropical West America. Stanford University Press.

Chicago Style (17th ed.) Citation

Keen, Angeline Myra. Sea Shells of Tropical West America. Stanford, California: Stanford University Press, 1958.

MLA (9th ed.) Citation

Keen, Angeline Myra. Sea Shells of Tropical West America. Stanford University Press, 1958.