Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.