Bumpus Bernard. (1980). Seventy years of international broadcasting. Unesco.
Chicagoスタイル(17版)引用形式Bumpus Bernard. Seventy Years of International Broadcasting. Paris: Unesco, 1980.
MLA(9版)引用形式Bumpus Bernard. Seventy Years of International Broadcasting. Unesco, 1980.
警告: この引用は必ずしも正確ではありません.