APA (7th ed.) Zitazioa

Erickson, S. L. (1999). Fundamentals of environmental management. Wiley.

Chicago Style (17th ed.) Zitazioa

Erickson, Steven L. Fundamentals of Environmental Management. New York: Wiley, 1999.

MLA (9th ed.) Zitazioa

Erickson, Steven L. Fundamentals of Environmental Management. Wiley, 1999.