Cita APA (7a ed.)

Douglas, G. H. (1987). The early days of radio broadcasting. McFarland.

Cita Chicago Style (17a ed.)

Douglas, George H. The Early Days of Radio Broadcasting. Jefferson [etc.]: McFarland, 1987.

Cita MLA (9a ed.)

Douglas, George H. The Early Days of Radio Broadcasting. McFarland, 1987.