APA Citatie

(Firm), P. (1997). The Guide to graduate environmental programs. Washington, D.C.

Chicago Style citaat

(Firm), ProQuest. The Guide to Graduate Environmental Programs. Washington, D.C, 1997.

MLA citatie

(Firm), ProQuest. The Guide to Graduate Environmental Programs. Washington, D.C, 1997.

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