Dyfyniad APA

The year book of world affairs. Volume 27, 1973. Stevens & sons.

Dyfyniad Arddull Chicago

The Year Book of World Affairs. Volume 27, 1973. London: Stevens & sons.

Dyfyniad MLA

The Year Book of World Affairs. Volume 27, 1973. Stevens & sons.

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