Fifty Lessons. (2008). Executing for Results. Harvard Bus.School Pub.
Chicago-čujuhus (17. p.)Fifty Lessons. Executing for Results. Boston: Harvard Bus.School Pub, 2008.
MLA-čujuhus (9. p.)Fifty Lessons. Executing for Results. Harvard Bus.School Pub, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.