APA Citation

Cunningham, W. P., & Cunningham, M. A. Environmental science: A global concern (Twelfth edition.).

Chicago Style Citation

Cunningham, William P., and Mary Ann Cunningham. Environmental Science: A Global Concern. Twelfth edition.

MLA Citation

Cunningham, William P., and Mary Ann Cunningham. Environmental Science: A Global Concern. Twelfth edition.

Warning: These citations may not always be 100% accurate.