APA (7th ed.) Citation

Graham, A., Graham, F., & Jordan, D. (1980). Careers in conservation. Sierra Club Books.

Chicago Style (17th ed.) Citation

Graham, Ada, Frank Graham, and Drake Jordan. Careers in Conservation. San Francisco: Sierra Club Books, 1980.

MLA (9th ed.) Citation

Graham, Ada, et al. Careers in Conservation. Sierra Club Books, 1980.