Ray, C. E. (1976). Phoca wymani and other Tertiary seals (Mammalia, Phocidae) described from the eastern seaboard of North America. Smithsonian Institution.
Chicago Style (17th ed.) CitationRay, Clayton Edward. Phoca Wymani and Other Tertiary Seals (Mammalia, Phocidae) Described from the Eastern Seaboard of North America. Washington: Smithsonian Institution, 1976.
MLA (9th ed.) CitationRay, Clayton Edward. Phoca Wymani and Other Tertiary Seals (Mammalia, Phocidae) Described from the Eastern Seaboard of North America. Smithsonian Institution, 1976.
Warning: These citations may not always be 100% accurate.