Schulberg, B. (1989). Radio advertising: The authoritative handbook. NTC Business Books.
Lua i Stíl Chicago (17ú heag.)Schulberg, Bob. Radio Advertising: The Authoritative Handbook. Lincolnwood, Ill: NTC Business Books, 1989.
Lua MLA (9ú heag.)Schulberg, Bob. Radio Advertising: The Authoritative Handbook. NTC Business Books, 1989.
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