George Belch. (2019). Advertising and Promotion (9th ed.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)George Belch. Advertising and Promotion. 9th ed. Delhi: McGraw Hill, 2019.
Lua MLA (9ú heag.)George Belch. Advertising and Promotion. 9th ed. McGraw Hill, 2019.
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