Slater, J.(2001). Is couponing an effective promotional strategy? An examination of the Procter & Gamble zero-coupon test. Journal of Marketing Communications, 7(1), 3-9. doi:10.1080/13527260151077427
MLA CitationSlater, Jan. "Is Couponing an Effective Promotional Strategy? An Examination of the Procter & Gamble Zero-coupon Test". Journal of Marketing Communications, 7.1 ( 2001 ): 3-9.
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