Schultz, D. E. (1981). Essentials of advertising strategy. NTC Business Books.
Lua i Stíl Chicago (17ú heag.)Schultz, Don E. Essentials of Advertising Strategy. Chicago, Ill: NTC Business Books, 1981.
Lua MLA (9ú heag.)Schultz, Don E. Essentials of Advertising Strategy. NTC Business Books, 1981.
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