APA (7th ed.) Zitazioa

Ries Al & Trout, J. (2001). Positioning: The battle for your mind (20th anniversary edition.). McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Ries Al eta Jack Trout. Positioning: The Battle for Your Mind. 20th anniversary edition. New York: McGraw-Hill, 2001.

MLA (9th ed.) Zitazioa

Ries Al eta Jack Trout. Positioning: The Battle for Your Mind. 20th anniversary edition. McGraw-Hill, 2001.