APA Style

Kotler, Philip, Armstrong, Gary. (2008). Principles of Marketing (12). New York: Pearson Education.

Chicago Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing. 12 New York: Pearson Education, 2008. Text.

MLA Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing. 12 New York: Pearson Education, 2008. Text.

Turabian Style

Kotler, Philip, Armstrong, Gary. Principles of Marketing. 12 New York: Pearson Education, 2008. Print.