Cita APA (7th ed.)

Kotler, P., & Amstrong, G. (2013). Principles of marketing (14th ed.). Pearson educational limited.

Cita Chicago (17th ed.)

Kotler, Philip, i Gary Amstrong. Principles of Marketing. 14th ed. England: Pearson educational limited, 2013.

Cita MLA (9th ed.)

Kotler, Philip, i Gary Amstrong. Principles of Marketing. 14th ed. Pearson educational limited, 2013.