Ries, A. (2001). Positioning. Tata McGraw-Hill.
Chicago-čujuhus (17. p.)Ries, Al. Positioning. New Delhi: Tata McGraw-Hill, 2001.
MLA-čujuhus (9. p.)Ries, Al. Positioning. Tata McGraw-Hill, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.