APA Citation

Kotler, P., & Armstrong, G. (1991). Principles of marketing (5th ed.). Englewood Cliffs, N.J.: Prentice Hall.

Chicago Style Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 5th ed. Englewood Cliffs, N.J.: Prentice Hall, 1991.

MLA Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 5th ed. Englewood Cliffs, N.J.: Prentice Hall, 1991.

Warning: These citations may not always be 100% accurate.