Dyfyniad APA

(1983). Manual X: Indirect techniques for demographic estima-tion. United Nations.

Dyfyniad Arddull Chicago

Manual X: Indirect Techniques for Demographic Estima-tion. New York: United Nations, 1983.

Dyfyniad MLA

Manual X: Indirect Techniques for Demographic Estima-tion. United Nations, 1983.

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