Dyfyniad APA

Harper, D., & Brown Tony. (1970). Sustainable management of tropical catchments. John Wiley and sons.

Dyfyniad Arddull Chicago

Harper, David, and Brown Tony. Sustainable Management of Tropical Catchments. New York: John Wiley and sons, 1970.

Dyfyniad MLA

Harper, David, and Brown Tony. Sustainable Management of Tropical Catchments. John Wiley and sons, 1970.

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