Kotler, P., & Armstrong, G. (2001). Principles of marketing (Ninth edition.). Prentice Hall, Inc.
Chicago Style (17th ed.) CitationKotler, Philip, and Gary Armstrong. Principles of Marketing. Ninth edition. Upper Saddle River, New Jersey: Prentice Hall, Inc, 2001.
MLA citiranjeKotler, Philip, and Gary Armstrong. Principles of Marketing. Ninth edition. Prentice Hall, Inc, 2001.
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