Kotler Philip. (2014). Principles of Marketing (15th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Kotler Philip. Principles of Marketing. 15th. Noida: Pearson, 2014.
Lua MLA (9ú heag.)Kotler Philip. Principles of Marketing. 15th. Pearson, 2014.
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