Dyfyniad APA

HANSEN, A. (2017). Children’s errors in mathematics. Learning Matters, Sage Publications.

Dyfyniad Arddull Chicago

HANSEN, Alice. Children’s Errors in Mathematics. Learning Matters, Sage Publications, 2017.

Dyfyniad MLA

HANSEN, Alice. Children’s Errors in Mathematics. Learning Matters, Sage Publications, 2017.

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