Παραπομπή σε μορφή APA (7η εκδ.)

Enger, E. D., & Smith, B. (1995). Environmental science: A study of interrelationships (5th edition.). Wm. C. Brown Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Enger, Eldom D., και Brandley Smith. Environmental Science: A Study of Interrelationships. 5th edition. Dubuque, IA: Wm. C. Brown Publishers, 1995.

Παραπομπή σε μορφή MLA (8th εκδ.)

Enger, Eldom D., και Brandley Smith. Environmental Science: A Study of Interrelationships. 5th edition. Wm. C. Brown Publishers, 1995.