Cita APA (7a ed.)

Ries, A., & Trout, J. (2001). Positioning: The battle for your mind (1st edition.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Ries, Al, y Jack Trout. Positioning: The Battle for Your Mind. 1st edition. New York: McGraw-Hill, 2001.

Cita MLA (9a ed.)

Ries, Al, y Jack Trout. Positioning: The Battle for Your Mind. 1st edition. McGraw-Hill, 2001.