Ohio Social Studies Review. Ohio Council for the Social Studies (OCSS).
Chicago-čujuhus (17. p.)Ohio Social Studies Review. Ohio Council for the Social Studies (OCSS).
MLA-čujuhus (9. p.)Ohio Social Studies Review. Ohio Council for the Social Studies (OCSS).
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.