APA (7th ed.) Citation

Grube, G. E. (1964). Introductory ornithology. W.C. Brown Co..

Chicago Style (17th ed.) Citation

Grube, George Edward. Introductory Ornithology. Dubuque, Iowa: W.C. Brown Co., 1964.

MLA (9th ed.) Citation

Grube, George Edward. Introductory Ornithology. W.C. Brown Co., 1964.