APA (7th ed.) Citation

Gralla, P., & Plumlee, C. (1994). How the environment works. Ziff-Davis Press.

Chicago Style (17th ed.) Citation

Gralla, Preston, and Cherie Plumlee. How the Environment Works. Emeryville, California: Ziff-Davis Press, 1994.

MLA (9th ed.) Citation

Gralla, Preston, and Cherie Plumlee. How the Environment Works. Ziff-Davis Press, 1994.