Environmental Careers Organization & ebrary, Inc. (2004). The ECO guide to careers that make a difference. Island Press.
Citação do estilo Chicago (17ª ed.)Environmental Careers Organization e Inc ebrary. The ECO Guide to Careers That Make a Difference. Washington: Island Press, 2004.
Citação MLA (9ª ed.)Environmental Careers Organization e Inc ebrary. The ECO Guide to Careers That Make a Difference. Island Press, 2004.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.