APA (7th ed.) Citation

O'Connor, J., & Goodwin, G. G. (1961). The big game animals of North America. Outdoor life.

Chicago Style (17th ed.) Citation

O'Connor, Jack, and George Gilbert Goodwin. The Big Game Animals of North America. New York: Outdoor life, 1961.

MLA (9th ed.) Citation

O'Connor, Jack, and George Gilbert Goodwin. The Big Game Animals of North America. Outdoor life, 1961.