Não informado. (1919). Radio News. Ziff-Davis Publishing.
Style de citation Chicago (17e éd.)Não informado. Radio News. New York: Ziff-Davis Publishing, 1919.
Style de citation MLA (8e éd.)Não informado. Radio News. Ziff-Davis Publishing, 1919.
Attention : ces citations peuvent ne pas être correctes à 100%.