KOTLER PHILIP. (1997). MARKETING MANAGEMENT: ANALYSIS PLANNING IMPLEMETION & CONTROL (9TH.). PRENTICE HALL.
Cita Chicago (17th ed.)KOTLER PHILIP. MARKETING MANAGEMENT: ANALYSIS PLANNING IMPLEMETION & CONTROL. 9TH. NEW DELHI: PRENTICE HALL, 1997.
Cita MLA (9th ed.)KOTLER PHILIP. MARKETING MANAGEMENT: ANALYSIS PLANNING IMPLEMETION & CONTROL. 9TH. PRENTICE HALL, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.