Dyfyniad APA

Harper,David, & Brown, T. (1998). Sustainable management of tropical catchments. John Wiley.

Dyfyniad Arddull Chicago

Harper,David, and Tony Brown. Sustainable Management of Tropical Catchments. New York: John Wiley, 1998.

Dyfyniad MLA

Harper,David, and Tony Brown. Sustainable Management of Tropical Catchments. John Wiley, 1998.

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