Bearden William O. (2011). Handbook of Marketing Scales (3rd.). Sage Publication.
Lua i Stíl Chicago (17ú heag.)Bearden William O. Handbook of Marketing Scales. 3rd. London: Sage Publication, 2011.
Lua MLA (9ú heag.)Bearden William O. Handbook of Marketing Scales. 3rd. Sage Publication, 2011.
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