APA Style

Kotler, Philip, Amstrong, Gary. (2000). Principles of marketing (9th ed.). Upper Saddle River: Prentice-Hall International Inc..

Chicago Style

Kotler, Philip, Amstrong, Gary. Principles of marketing. 9th ed. Upper Saddle River: Prentice-Hall International Inc., 2000. Text.

MLA Style

Kotler, Philip, Amstrong, Gary. Principles of marketing. 9th ed. Upper Saddle River: Prentice-Hall International Inc., 2000. Text.

Turabian Style

Kotler, Philip, Amstrong, Gary. Principles of marketing. 9th ed. Upper Saddle River: Prentice-Hall International Inc., 2000. Print.