APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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