Shipa, B. (2008). Leadership in a challenging World: A sacred journey.
Chicago-čujuhus (17. p.)Shipa, Barbara. Leadership in a Challenging World: A Sacred Journey. Oxford, 2008.
MLA-čujuhus (9. p.)Shipa, Barbara. Leadership in a Challenging World: A Sacred Journey. 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.