Citazione APA

Kotler,Philip, & Armstrong, G. (2008). Principles of marketing (12nd ed.). Pearson Education.

Stile di citazione Chicago

Kotler,Philip, e Gray Armstrong. Principles of Marketing. 12nd ed. New Delhi: Pearson Education, 2008.

Citazione MLA

Kotler,Philip, e Gray Armstrong. Principles of Marketing. 12nd ed. Pearson Education, 2008.