Cita APA (7th ed.)

Kotler, P., Armstrong, G., & Opresnik, M. O. (2021). Principles of marketing (18e, Global edition.). Pearson Education.

Cita Chicago (17th ed.)

Kotler, Philip, Gary Armstrong, i Marc Oliver Opresnik. Principles of Marketing. 18e, Global edition. Harlow, England: Pearson Education, 2021.

Cita MLA (9th ed.)

Kotler, Philip, et al. Principles of Marketing. 18e, Global edition. Pearson Education, 2021.