Education Development Center. (2000). Impact mathematics: Algebra and more for the middle grades. Glencoe/McGraw-Hill.
Chicago-referens (17:e uppl.)Education Development Center. Impact Mathematics: Algebra and More for the Middle Grades. New York: Glencoe/McGraw-Hill, 2000.
MLA-referens (9:e uppl.)Education Development Center. Impact Mathematics: Algebra and More for the Middle Grades. Glencoe/McGraw-Hill, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.