Cita APA (7a ed.)

Gardner, G. T., & Stern, P. C. (1996). Environmental problems and human behavior. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Gardner, Gerald T., y Paul C. Stern. Environmental Problems and Human Behavior. Needham Heights, MA: Allyn and Bacon, 1996.

Cita MLA (9a ed.)

Gardner, Gerald T., y Paul C. Stern. Environmental Problems and Human Behavior. Allyn and Bacon, 1996.