Dyfyniad APA

Secreatariat of the United, N. c. o. d. (1977). Desertification: Its causes and consequences. Pergamon Press.

Dyfyniad Arddull Chicago

Secreatariat of the United, Nations conference on desertifict. Desertification: Its Causes and Consequences. Oxford: Pergamon Press, 1977.

Dyfyniad MLA

Secreatariat of the United, Nations conference on desertifict. Desertification: Its Causes and Consequences. Pergamon Press, 1977.

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