(1994). Mathematics teaching in the middle school. National Council of Teachers of Mathematics.
Citazione stile Chigago Style (17a edizione)Mathematics Teaching in the Middle School. Reston, VA: National Council of Teachers of Mathematics, 1994.
Citatione MLA (9a ed.)Mathematics Teaching in the Middle School. National Council of Teachers of Mathematics, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.