Sayre, S. (2001). Qualitative methods for marketplace research Shay Sayre. Sage.
Lua i Stíl Chicago (17ú heag.)Sayre, Shay. Qualitative Methods for Marketplace Research Shay Sayre. Sage, 2001.
Lua MLA (8ú heag.)Sayre, Shay. Qualitative Methods for Marketplace Research Shay Sayre. Sage, 2001.
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