Ries, A. (2007). The 22 Immutable Laws of Marketing. Quercus Publishing Ltd.
Chicago-čujuhus (17. p.)Ries, Al. The 22 Immutable Laws of Marketing. London: Quercus Publishing Ltd, 2007.
MLA-čujuhus (9. p.)Ries, Al. The 22 Immutable Laws of Marketing. Quercus Publishing Ltd, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.