Dillon, W. R., Madden, T. J., & Firtle, N. H. (1994). Marketing research in a marketing environment (3rd ed.). Burr Ridge, Ill.: Irwin.
Trích dẫn kiểu ChicagoDillon, William R., Thomas J. Madden, và Neil H. Firtle. Marketing Research in a Marketing Environment. 3rd ed. Burr Ridge, Ill.: Irwin, 1994.
MLA citiranjeDillon, William R., Thomas J. Madden, và Neil H. Firtle. Marketing Research in a Marketing Environment. 3rd ed. Burr Ridge, Ill.: Irwin, 1994.
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