Malhotra, N. K. (2019). Marketing Research (7th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Malhotra, Naresh K. Marketing Research. 7th. Noida: Pearson, 2019.
Lua MLA (9ú heag.)Malhotra, Naresh K. Marketing Research. 7th. Pearson, 2019.
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