Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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