Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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