Morris, P. (1974). A field guide to Pacific Coast shells, including shells of Hawaii and the Gulf of Califorinia: Percy A. Morris (2nd edition., revised and enlarged.). Houghton Mifflin Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMorris, Percy.A. A Field Guide to Pacific Coast Shells, Including Shells of Hawaii and the Gulf of Califorinia: Percy A. Morris. 2nd edition., revised and enlarged. Boston, Massachusetts: Houghton Mifflin Co, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMorris, Percy.A. A Field Guide to Pacific Coast Shells, Including Shells of Hawaii and the Gulf of Califorinia: Percy A. Morris. 2nd edition., revised and enlarged. Houghton Mifflin Co, 1974.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.