Dyfyniad APA

Bumpus Bernard. (1980). Seventy years of international broadcasting. Unesco.

Dyfyniad Arddull Chicago

Bumpus Bernard. Seventy Years of International Broadcasting. Paris: Unesco, 1980.

Dyfyniad MLA

Bumpus Bernard. Seventy Years of International Broadcasting. Unesco, 1980.

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