APA Style

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

Chicago Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 14th ed.. 14th ed. Boston: Pearson, 2012. Text.

MLA Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 14th ed.. 14th ed. Boston: Pearson, 2012. Text.

Turabian Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 14th ed.. 14th ed. Boston: Pearson, 2012. Print.