Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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