Kotler, P. T. (2015). Principles of Marketing (17th.). Pearson India.
Lua i Stíl Chicago (17ú heag.)Kotler, Philip T. Principles of Marketing. 17th. Pearson India, 2015.
Lua MLA (9ú heag.)Kotler, Philip T. Principles of Marketing. 17th. Pearson India, 2015.
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