Barrett, C. (2007). What drives phenomenal success? Kantola.
Chicago-čujuhus (17. p.)Barrett, Colleen. What Drives Phenomenal Success? Mill Valley, CA: Kantola, 2007.
MLA-čujuhus (9. p.)Barrett, Colleen. What Drives Phenomenal Success? Kantola, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.