Dyfyniad APA

Zimmermann, W., & Cunningham, S. (1991). Visualization in teaching and learning mathematics. The Mathematical Association of America.

Dyfyniad Arddull Chicago

Zimmermann, Walter, and Steve Cunningham. Visualization in Teaching and Learning Mathematics. Washington, D.C: The Mathematical Association of America, 1991.

Dyfyniad MLA

Zimmermann, Walter, and Steve Cunningham. Visualization in Teaching and Learning Mathematics. The Mathematical Association of America, 1991.

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