Dyfyniad APA

(1994). Mathematics teaching in the middle school. National Council of Teachers of Mathematics.

Dyfyniad Arddull Chicago

Mathematics Teaching in the Middle School. Reston, VA: National Council of Teachers of Mathematics, 1994.

Dyfyniad MLA

Mathematics Teaching in the Middle School. National Council of Teachers of Mathematics, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.