APA

Scammon C. M., . (1968). The marine mammals of the north-western coast of North America. New York: Dover Publications.

Chicago

Scammon Charles M, . 1968. The marine mammals of the north-western coast of North America. New York: Dover Publications.

Harvard

Scammon C. M., . (1968). The marine mammals of the north-western coast of North America. New York: Dover Publications.

MLA

Scammon Charles M, . The marine mammals of the north-western coast of North America. New York: Dover Publications. 1968.