Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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