APA-viite (7. p.)

(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.

Chicago-viite (17. p.)

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.

MLA-viite (9. p.)

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.