(1994). Mathematics teaching in the middle school. National Council of Teachers of Mathematics.
Chicago-referens (17:e uppl.)Mathematics Teaching in the Middle School. Reston, VA: National Council of Teachers of Mathematics, 1994.
MLA-referens (9:e uppl.)Mathematics Teaching in the Middle School. National Council of Teachers of Mathematics, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.