Belk Russell. (2013). Qualitative Consumer and Marketing Rsearch (1.). Sage Publication.
Lua i Stíl Chicago (17ú heag.)Belk Russell. Qualitative Consumer and Marketing Rsearch. 1. London: Sage Publication, 2013.
Lua MLA (9ú heag.)Belk Russell. Qualitative Consumer and Marketing Rsearch. 1. Sage Publication, 2013.
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