Cita APA (7th ed.)

Enger, E. D. (1989). Environmental science: A study of interrelationships. Wm. C. Brown Publishers.

Cita Chicago (17th ed.)

Enger, Eldon D. Environmental Science: A Study of Interrelationships. Dubuque, IA: Wm. C. Brown Publishers, 1989.

Cita MLA (9th ed.)

Enger, Eldon D. Environmental Science: A Study of Interrelationships. Wm. C. Brown Publishers, 1989.