KOTLER, P. (2009). MARKETING MANAGEMENT (13TH.). PEARSON.
Lua i Stíl Chicago (17ú heag.)KOTLER, PHILIP. MARKETING MANAGEMENT. 13TH. DELHI: PEARSON, 2009.
Lua MLA (9ú heag.)KOTLER, PHILIP. MARKETING MANAGEMENT. 13TH. PEARSON, 2009.
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