THAKUR DEVENDRA. (1991). MARKETING PRINCIPLES AND TECHNIQUES. DEEP & DEEP PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)THAKUR DEVENDRA. MARKETING PRINCIPLES AND TECHNIQUES. NEW DELHI: DEEP & DEEP PUBLICATIONS, 1991.
Lua MLA (9ú heag.)THAKUR DEVENDRA. MARKETING PRINCIPLES AND TECHNIQUES. DEEP & DEEP PUBLICATIONS, 1991.
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