APA (7th ed.) Citation

Kotler, P., & Armstrong. (2001). Active book: Principles of marketing. Prentice Hall.

Chicago Style (17th ed.) Citation

Kotler, Philip, and Armstrong. Active Book: Principles of Marketing. Upper saddle river, NJ: Prentice Hall, 2001.

MLA (9th ed.) Citation

Kotler, Philip, and Armstrong. Active Book: Principles of Marketing. Prentice Hall, 2001.