APA (7th ed.) Citation

Mason, W. H., & Folkerts, G. W. (1973). Environmental problems: Principles, readings, and comments. W. C. Brown.

Chicago Style (17th ed.) Citation

Mason, William H., and George W. Folkerts. Environmental Problems: Principles, Readings, and Comments. Dubuque, Iowa: W. C. Brown, 1973.

MLA (9th ed.) Citation

Mason, William H., and George W. Folkerts. Environmental Problems: Principles, Readings, and Comments. W. C. Brown, 1973.