APA (7th ed.) Citation

Sax, J. L. (1971). Defending the environment: A strategy for citizen action (4. print.). Knopf.

Chicago Style (17th ed.) Citation

Sax, Joseph L. Defending the Environment: A Strategy for Citizen Action. 4. print. New York: Knopf, 1971.

MLA (9th ed.) Citation

Sax, Joseph L. Defending the Environment: A Strategy for Citizen Action. 4. print. Knopf, 1971.