Dyfyniad APA

(1979). Land and water development (selected literature 1978). The Netherland: ILRI.

Dyfyniad Arddull Chicago

Land and Water Development (selected Literature 1978). The Netherland: ILRI, 1979.

Dyfyniad MLA

Land and Water Development (selected Literature 1978). The Netherland: ILRI, 1979.

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