APA-referens (7:e uppl.)

Valk, A. v. d. (2006). The biology of freshwater wetlands. Oxford University Press.

Chicago-referens (17:e uppl.)

Valk, Arnoud van der. The Biology of Freshwater Wetlands. Oxford ; New York: Oxford University Press, 2006.

MLA-referens (9:e uppl.)

Valk, Arnoud van der. The Biology of Freshwater Wetlands. Oxford University Press, 2006.