Aaker, D. A. 1. (1998). Marketing research (6th ed.). New York ; Chichester: Wiley-VCH.
Trích dẫn kiểu ChicagoAaker, David A. 1938-. Marketing Research. 6th ed. New York ; Chichester: Wiley-VCH, 1998.
Deismireacht MLAAaker, David A. 1938-. Marketing Research. 6th ed. New York ; Chichester: Wiley-VCH, 1998.
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