APA (7th ed.) Citation

Armstrong, G., & Kotler, P. (1991). Principles of marketing (5th.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Armstrong, Gary, and Philip Kotler. Principles of Marketing. 5th. New Jersey: Prentice-Hall, 1991.

MLA (8th ed.) Citation

Armstrong, Gary, and Philip Kotler. Principles of Marketing. 5th. Prentice-Hall, 1991.

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