Dyfyniad APA

National Council of Teachers of Mathematics. (1994). Teaching children mathematics. National Council of Teachers of Mathematics.

Dyfyniad Arddull Chicago

National Council of Teachers of Mathematics. Teaching Children Mathematics. Reston, Va: National Council of Teachers of Mathematics, 1994.

Dyfyniad MLA

National Council of Teachers of Mathematics. Teaching Children Mathematics. National Council of Teachers of Mathematics, 1994.

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