Douglass, S. J. (1987). Inventing American broadcasting 1899-1922. Baltimore: The Johns Hopkins University Press.
Παραπομπή Chicago StyleDouglass, Susan J. Inventing American Broadcasting 1899-1922. Baltimore: The Johns Hopkins University Press, 1987.
Παραπομπή MLADouglass, Susan J. Inventing American Broadcasting 1899-1922. Baltimore: The Johns Hopkins University Press, 1987.
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