Hutt, M. D. . .., & Speh,Thomas W. (2007). Business marketing management: B2B (9.). Cengage Learning.
Chicago Style aipamenaHutt, Michael D ., and Speh,Thomas W. Business Marketing Management: B2B. 9. Australia: Cengage Learning, 2007.
MLA aipamenaHutt, Michael D ., and Speh,Thomas W. Business Marketing Management: B2B. 9. Cengage Learning, 2007.
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