एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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