APA (7th ed.) Citation

Walker, E. P. (1975). Mammals of the world (3rd ed.). The Johns Hopkins University Press.

Chicago Style (17th ed.) Citation

Walker, Ernest Pillsbury. Mammals of the World. 3rd ed. Baltimore: The Johns Hopkins University Press, 1975.

MLA (9th ed.) Citation

Walker, Ernest Pillsbury. Mammals of the World. 3rd ed. The Johns Hopkins University Press, 1975.