APA Style

Kotler, Philip, Armstrong, Garry. (2008). Principles of marketing (12th ed.). Englewood Cliffs: Pearson Education International.

Chicago Style

Kotler, Philip, Armstrong, Garry. Principles of marketing. 12th ed. Englewood Cliffs: Pearson Education International, 2008. Text.

MLA Style

Kotler, Philip, Armstrong, Garry. Principles of marketing. 12th ed. Englewood Cliffs: Pearson Education International, 2008. Text.

Turabian Style

Kotler, Philip, Armstrong, Garry. Principles of marketing. 12th ed. Englewood Cliffs: Pearson Education International, 2008. Print.