APA Citation

Pettingill, O. S. (1981). A guide to bird finding west of the Mississippi (2d ed.). New York: Oxford University Press.

Chicago Style Citation

Pettingill, Olin Sewall. A Guide to Bird Finding West of the Mississippi. 2d ed. New York: Oxford University Press, 1981.

MLA Citation

Pettingill, Olin Sewall. A Guide to Bird Finding West of the Mississippi. 2d ed. New York: Oxford University Press, 1981.

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