Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.