Цитирование APA (7-е изд.)
Environmental Careers Organization & ebrary, Inc. (2004). The ECO guide to careers that make a difference. Island Press.
Цитирование в стиле Чикаго (17-е изд.)
Environmental Careers Organization и Inc ebrary. The ECO Guide to Careers That Make a Difference. Washington: Island Press, 2004.
Цитирование MLA (9-е изд.)
Environmental Careers Organization и Inc ebrary. The ECO Guide to Careers That Make a Difference. Island Press, 2004.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.