Education Development Center. (2000). Impact mathematics: Algebra and more for the middle grades. Glencoe/McGraw-Hill.
Chicago-čujuhus (17. p.)Education Development Center. Impact Mathematics: Algebra and More for the Middle Grades. New York: Glencoe/McGraw-Hill, 2000.
MLA-čujuhus (9. p.)Education Development Center. Impact Mathematics: Algebra and More for the Middle Grades. Glencoe/McGraw-Hill, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.