Ries, A., & Trout, J. (2007). The 22 Immutable Laws of Marketing. Profile Books Ltd.
Citazione stile Chigago Style (17a edizione)Ries, Al, e Jack Trout. The 22 Immutable Laws of Marketing. London: Profile Books Ltd, 2007.
Citatione MLA (9a ed.)Ries, Al, e Jack Trout. The 22 Immutable Laws of Marketing. Profile Books Ltd, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.