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