APA Style

Kotler, Philip, Armstrong, Gary. (2012). Principles of marketing 14th ed. (14th). Harlow: Pearson.

Chicago Style

Kotler, Philip, Armstrong, Gary. Principles of marketing 14th ed.. 14th Harlow: Pearson, 2012. Text.

MLA Style

Kotler, Philip, Armstrong, Gary. Principles of marketing 14th ed.. 14th Harlow: Pearson, 2012. Text.

Turabian Style

Kotler, Philip, Armstrong, Gary. Principles of marketing 14th ed.. 14th Harlow: Pearson, 2012. Print.