Dyfyniad APA

Jeffries, M., & Mills, D. (1992). Freshwater ecology principles and applications. CBS.

Dyfyniad Arddull Chicago

Jeffries, Michael, and Derek Mills. Freshwater Ecology Principles and Applications. New Delhi: CBS, 1992.

Dyfyniad MLA

Jeffries, Michael, and Derek Mills. Freshwater Ecology Principles and Applications. CBS, 1992.

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