APA (7th ed.) Citation

Kotler, P., & Armstrong, G. (2021). Principles of marketing (18th ed.). Pearson Education.

Chicago Style (17th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 18th ed. Harlow, England: Pearson Education, 2021.

MLA (9th ed.) Citation

Kotler, Philip, and Gary Armstrong. Principles of Marketing. 18th ed. Pearson Education, 2021.