Dyfyniad APA

(1972). The United Nations: Past , present and future. The Free Press.

Dyfyniad Arddull Chicago

The United Nations: Past , Present and Future. New York: The Free Press, 1972.

Dyfyniad MLA

The United Nations: Past , Present and Future. The Free Press, 1972.

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