Kotler,Philip, & Armstrong, G. (2008). Principles of marketing (12nd ed.). Pearson Education.
Chicago Edition CitationKotler,Philip, and Gray Armstrong. Principles of Marketing. 12nd ed. New Delhi: Pearson Education, 2008.
Deismireacht MLAKotler,Philip, and Gray Armstrong. Principles of Marketing. 12nd ed. Pearson Education, 2008.
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