Cita APA

Kotler, P., & Armstrong,Gary. (2008). Principles of marketing (12th.). PHI.

Citación estilo Chicago

Kotler, Philip, y Armstrong,Gary. Principles of Marketing. 12th. New Delhi: PHI, 2008.

Cita MLA

Kotler, Philip, y Armstrong,Gary. Principles of Marketing. 12th. PHI, 2008.