Ries, A., & Ries, L. (1998). The 22 immutable laws of branding: How to build a product or service into a world-class brand. Harper Collins.
Citazione stile Chigago Style (17a edizione)Ries, Al, e Laura Ries. The 22 Immutable Laws of Branding: How to Build a Product or Service into a World-class Brand. New York: Harper Collins, 1998.
Citatione MLA (9a ed.)Ries, Al, e Laura Ries. The 22 Immutable Laws of Branding: How to Build a Product or Service into a World-class Brand. Harper Collins, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.