Kotler, P., & Armstrong, G. (2021). Principles of marketing (18th ed.). Pearson Education.
Citazione stile Chigago Style (17a edizione)Kotler, Philip, e Gary Armstrong. Principles of Marketing. 18th ed. Harlow, England: Pearson Education, 2021.
Citatione MLA (9a ed.)Kotler, Philip, e Gary Armstrong. Principles of Marketing. 18th ed. Pearson Education, 2021.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.