Cita APA (7th ed.)

(1966). A field guide to Pacific coast shells: Including shells of Hawaii and the Gulf of California / by Percy A. Morris.

Cita Chicago (17th ed.)

A Field Guide to Pacific Coast Shells: Including Shells of Hawaii and the Gulf of California / by Percy A. Morris. 1966.

Cita MLA (9th ed.)

A Field Guide to Pacific Coast Shells: Including Shells of Hawaii and the Gulf of California / by Percy A. Morris. 1966.