Armstrong, G., & Kotler, P. (2009). Marketing : an introduction / Gary Armstrong, Philip Kotler: An introduction (9th ed.). Pearson Prentice Hall.
Chicago Style (17th ed.) CitationArmstrong, Gary, and Philip Kotler. Marketing : An Introduction / Gary Armstrong, Philip Kotler: An Introduction. 9th ed. Upper Saddle River, N.J.: Pearson Prentice Hall, 2009.
MLA (9th ed.) CitationArmstrong, Gary, and Philip Kotler. Marketing : An Introduction / Gary Armstrong, Philip Kotler: An Introduction. 9th ed. Pearson Prentice Hall, 2009.
Warning: These citations may not always be 100% accurate.