APA (7th ed.) Citation

Wozencraft, W. C. (1993). Halichoerus grypus. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Wozencraft, W. Christopher. Halichoerus Grypus. Smithsonian Institution Press, 1993.

MLA (9th ed.) Citation

Wozencraft, W. Christopher. Halichoerus Grypus. Smithsonian Institution Press, 1993.

Warning: These citations may not always be 100% accurate.