Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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