APA (7e ed.) Bronvermelding

Walters, M. J. (2004). Seven modern plagues and how we are causing them (Paperback edition.). Island Press.

Chicago (17e ed.) Bronvermelding

Walters, Mark Jerome. Seven Modern Plagues and How We Are Causing Them. Paperback edition. Washington, District of Columbia: Island Press, 2004.

MLA (9e ed.) Bronvermelding

Walters, Mark Jerome. Seven Modern Plagues and How We Are Causing Them. Paperback edition. Island Press, 2004.