(2000). Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education.
Chicago-čujuhus (17. p.)Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education, 2000.
MLA-čujuhus (9. p.)Percentage Distribution of 6- to 12-year-olds, 1972-97. U.S. Department of Education, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.