(2004). American Leadership. US News and World Report.
Chicago-čujuhus (17. p.)American Leadership. US News and World Report, 2004.
MLA-čujuhus (9. p.)American Leadership. US News and World Report, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.