APA (7th ed.) Citation

Masons, W. H., & Folkerts, G. W. (1979). Environmental problems: Principles, readings, and comments (2nd ed.). Wm.C.Brown.

Chicago Style (17th ed.) Citation

Masons, Williams H., and George W. Folkerts. Environmental Problems: Principles, Readings, and Comments. 2nd ed. Dubuque, IA: Wm.C.Brown, 1979.

MLA (9th ed.) Citation

Masons, Williams H., and George W. Folkerts. Environmental Problems: Principles, Readings, and Comments. 2nd ed. Wm.C.Brown, 1979.