Ries, A., & Trout, J. (2007). The 22 Immutable Laws of Marketing. Profile Books Ltd.
Chicago-čujuhus (17. p.)Ries, Al, juo Jack Trout. The 22 Immutable Laws of Marketing. London: Profile Books Ltd, 2007.
MLA-čujuhus (9. p.)Ries, Al, juo Jack Trout. The 22 Immutable Laws of Marketing. Profile Books Ltd, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.