APA (7e ed.) Bronvermelding
Kotler, P. (1991). Principles of marketing (5th ed.). Prentice-Hall.
Chicago (17e ed.) Bronvermelding
Kotler, Philip. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall, 1991.
MLA (9e ed.) Bronvermelding
Kotler, Philip. Principles of Marketing. 5th ed. Prentice-Hall, 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.