Hester, E. (1997). Hướng dẫn marketing =: Marketing research. Hà Nội: Thống Kê.
শিকাগো স্টাইলে সাইটেশনHester, Edwards. Hướng Dẫn Marketing =: Marketing Research. Hà Nội: Thống Kê, 1997.
এমএলএ সাইটেশনHester, Edwards. Hướng Dẫn Marketing =: Marketing Research. Hà Nội: Thống Kê, 1997.
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