KOTLER, P. (2006). Marketing ManagementPhilip Kotler, Kevin Lane Keler. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)KOTLER, Philip. Marketing ManagementPhilip Kotler, Kevin Lane Keler. Prentice Hall, 2006.
Lua MLA (8ú heag.)KOTLER, Philip. Marketing ManagementPhilip Kotler, Kevin Lane Keler. Prentice Hall, 2006.
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