APA Citatie

Kotler, P., & Armstrong, G. (2001). Principles of marketing (9th ed.). Upper Saddle River: Prentice Hall.

Chicago Style citaat

Kotler, Philip, en Gary Armstrong. Principles of Marketing. 9th ed. Upper Saddle River: Prentice Hall, 2001.

MLA citatie

Kotler, Philip, en Gary Armstrong. Principles of Marketing. 9th ed. Upper Saddle River: Prentice Hall, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.