KOTLER PHILIP. (2008). PRINCIPLES OF MARKETING 12TH ED (12TH ED.). PEARSON PRENTICE HALL.
Chicago (17e ed.) BronvermeldingKOTLER PHILIP. PRINCIPLES OF MARKETING 12TH ED. 12TH ED. INDIA: PEARSON PRENTICE HALL, 2008.
MLA (9e ed.) BronvermeldingKOTLER PHILIP. PRINCIPLES OF MARKETING 12TH ED. 12TH ED. PEARSON PRENTICE HALL, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.