APA (7th ed.) Citation

Shepard, P., & McKinley, D. (1971). Environmental essays on the planet as home. Houghton-Mifflin.

Chicago Style (17th ed.) Citation

Shepard, Paul, and Daniel McKinley. Environmental Essays on the Planet as Home. Boston: Houghton-Mifflin, 1971.

MLA (9th ed.) Citation

Shepard, Paul, and Daniel McKinley. Environmental Essays on the Planet as Home. Houghton-Mifflin, 1971.