Ries, A., & Trout, J. (1993). The 22 immutable laws of marketing: Violate them at your own risk. HarperBusiness.
Chicago Style (17. basım) AtıfRies, Al, ve Jack Trout. The 22 Immutable Laws of Marketing: Violate Them at Your Own Risk. New York, NY: HarperBusiness, 1993.
MLA (8th ed.) AtıfRies, Al, ve Jack Trout. The 22 Immutable Laws of Marketing: Violate Them at Your Own Risk. HarperBusiness, 1993.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..