APA-referens (7:e uppl.)

Sadeleer, N. d. (2008). Environmental Principles. Oxford University Press.

Chicago-referens (17:e uppl.)

Sadeleer, Nicholas de. Environmental Principles. New York: Oxford University Press, 2008.

MLA-referens (9:e uppl.)

Sadeleer, Nicholas de. Environmental Principles. Oxford University Press, 2008.