APA (7th ed.) Citation

Crocker, T. D., & Rogers, A. J. 1. (1971). Environmental economics. Dryden Press.

Chicago Style (17th ed.) Citation

Crocker, Thomas D., and Augustus James 1929 Rogers. Environmental Economics. Hinsdale, Ill: Dryden Press, 1971.

MLA (9th ed.) Citation

Crocker, Thomas D., and Augustus James 1929 Rogers. Environmental Economics. Dryden Press, 1971.