Armstrong, G. (2000). Marketing an introductionGary Armstrong, Philip Kotler. Prentice Hall.
Cita Chicago Style (17a ed.)Armstrong, Gary. Marketing an IntroductionGary Armstrong, Philip Kotler. Prentice Hall, 2000.
Cita MLA (8a ed.)Armstrong, Gary. Marketing an IntroductionGary Armstrong, Philip Kotler. Prentice Hall, 2000.
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