APA način citiranja (7. izdanje)

Environmental Careers Organization & ebrary, Inc. (2004). The ECO guide to careers that make a difference. Island Press.

Čikaški stil citiranja (17. izdanje)

Environmental Careers Organization i Inc ebrary. The ECO Guide to Careers That Make a Difference. Washington: Island Press, 2004.

MLA način citiranja (9. izdanje)

Environmental Careers Organization i Inc ebrary. The ECO Guide to Careers That Make a Difference. Island Press, 2004.