APA Citatie

Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships (9th ed.). Boston: McGraw-Hill Higher Education.

Chicago Style citaat

Enger, Eldon D., en Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.

MLA citatie

Enger, Eldon D., en Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.

Let op: Deze citaties zijn niet altijd 100% accuraat.