Wessel. The. Brookings Institution Press.
Chicago-čujuhus (17. p.)Wessel. The. Brookings Institution Press.
MLA-čujuhus (9. p.)Wessel. The. Brookings Institution Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.