Ries Al. (2004). Origin of Brands. Harper Collins.
Lua i Stíl Chicago (17ú heag.)Ries Al. Origin of Brands. New York: Harper Collins, 2004.
Lua MLA (9ú heag.)Ries Al. Origin of Brands. Harper Collins, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.