Gaya APA

Hilliard, R, L., Keith, M, C. (2005). The Broadcast Century and Beyond: A Biography of American Broadcasting (Ed. 4). USA: Elsevier.

Gaya MLA

Hilliard, Robert, L.., Keith, Michael, C.. "The Broadcast Century and Beyond: A Biography of American Broadcasting". Ed. 4 USA: Elsevier, 2005. Text.