Cita APA (7a ed.)
Ries, A., & Trout, J. (2001). Positioning: The battle for your mind (20th anniversary ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)
Ries, Al, y Jack Trout. Positioning: The Battle for Your Mind. 20th anniversary ed. New York: McGraw-Hill, 2001.
Cita MLA (9a ed.)
Ries, Al, y Jack Trout. Positioning: The Battle for Your Mind. 20th anniversary ed. McGraw-Hill, 2001.
Precaución: Estas citas no son 100% exactas.