APA-Zitierstil (7. Ausg.)

De Villiers, M. D. (2006). Rethinking proof with The Geometer's Sketchpad ([Nachdr.], Sketchpad version 4 ed.). Key Curriculum Press.

Chicago-Zitierstil (17. Ausg.)

De Villiers, Michael D. Rethinking Proof with The Geometer's Sketchpad. [Nachdr.], Sketchpad version 4 ed. Emmeryville, CA: Key Curriculum Press, 2006.

MLA-Zitierstil (9. Ausg.)

De Villiers, Michael D. Rethinking Proof with The Geometer's Sketchpad. [Nachdr.], Sketchpad version 4 ed. Key Curriculum Press, 2006.