BRUNER GORDON C. (2001). MARKETING SCALES HANDBOOK. AMERICAN MARKETING ASSOCIATION.
Lua i Stíl Chicago (17ú heag.)BRUNER GORDON C. MARKETING SCALES HANDBOOK. CHICAGO: AMERICAN MARKETING ASSOCIATION, 2001.
Lua MLA (9ú heag.)BRUNER GORDON C. MARKETING SCALES HANDBOOK. AMERICAN MARKETING ASSOCIATION, 2001.
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