WILLIS, J. (1993). New Directions In Media Management Jim Willis, Diane B. Allyn & Bacin.
Lua i Stíl Chicago (17ú heag.)WILLIS, Jim. New Directions In Media Management Jim Willis, Diane B. Allyn & Bacin, 1993.
Lua MLA (8ú heag.)WILLIS, Jim. New Directions In Media Management Jim Willis, Diane B. Allyn & Bacin, 1993.
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