Cita APA (7a ed.)

Cooper, K. (1942). Barriers down: The history of the news agency epoch. Kennikat Press.

Cita Chicago Style (17a ed.)

Cooper, Kent. Barriers Down: The History of the News Agency Epoch. Washington [etc.]: Kennikat Press, 1942.

Cita MLA (9a ed.)

Cooper, Kent. Barriers Down: The History of the News Agency Epoch. Kennikat Press, 1942.