APA (7th ed.) Citation

Perry, R. (1966). The world of the polar bear ([1st U.S. ed.). University of Washington Press.

Chicago Style (17th ed.) Citation

Perry, Richard. The World of the Polar Bear. [1st U.S. ed. Seattle]: University of Washington Press, 1966.

MLA (9th ed.) Citation

Perry, Richard. The World of the Polar Bear. [1st U.S. ed. University of Washington Press, 1966.