APA (7th ed.) Citation

Botkin, D. B., & Keller, E. A. (1982). Environmental studies: The Earth as a living planet. C.E. Merrill Pub. Co.

Chicago Style (17th ed.) Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Studies: The Earth as a Living Planet. Columbus, [Ohio]: C.E. Merrill Pub. Co, 1982.

MLA (9th ed.) Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Studies: The Earth as a Living Planet. C.E. Merrill Pub. Co, 1982.