APA (7th ed.) Citation

Flack, J. A. D. (1976). Bird populations of aspen forests in western North America. American Ornithologists' Union ; [may be ordered from G. E. Woolfenden].

Chicago Style (17th ed.) Citation

Flack, J. A. Douglas. Bird Populations of Aspen Forests in Western North America. [Washington] : [Tampa, Fla.]: American Ornithologists' Union ; [may be ordered from G. E. Woolfenden], 1976.

MLA (9th ed.) Citation

Flack, J. A. Douglas. Bird Populations of Aspen Forests in Western North America. American Ornithologists' Union ; [may be ordered from G. E. Woolfenden], 1976.