APA Style

Kotler, Philip, Armstrong, Gary. (2008). Principles of Marketing 12th ed. (12th ed.). USA: Pearson Prenice Hall.

Chicago Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 12th ed.. 12th ed. USA: Pearson Prenice Hall, 2008. Text.

MLA Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 12th ed.. 12th ed. USA: Pearson Prenice Hall, 2008. Text.

Turabian Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing 12th ed.. 12th ed. USA: Pearson Prenice Hall, 2008. Print.