Cita APA (7th ed.)

Armstrong, G. a., & Kotler, P. (2011). Marketing: An introduction. London : Pearson.

Cita Chicago (17th ed.)

Armstrong, Gary author, i Philip Kotler. Marketing: An Introduction. London : Pearson, 2011.

Cita MLA (9th ed.)

Armstrong, Gary author, i Philip Kotler. Marketing: An Introduction. London : Pearson, 2011.