Beri,G.C. (2000). Marketing research (3rd ed.). T.M.H.
Chicago Edition CitationBeri,G.C. Marketing Research. 3rd ed. New Delhi: T.M.H, 2000.
Cita MLABeri,G.C. Marketing Research. 3rd ed. T.M.H, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.