Ries, A. (1996). The 22 Immutable laws of marketing. Harper Collins Publications.
Lua i Stíl Chicago (17ú heag.)Ries, AI. The 22 Immutable Laws of Marketing. New delhi: Harper Collins Publications, 1996.
Lua MLA (9ú heag.)Ries, AI. The 22 Immutable Laws of Marketing. Harper Collins Publications, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.