Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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