APA Citation

Vargas Vargas, G., & Gamboa Araya, R. (2013). The Van Hiele model and the teaching of the geometry. Universidad Nacional, Costa Rica.

Chicago Style Citation

Vargas Vargas, Gilberto, and Ronny Gamboa Araya. The Van Hiele Model and the Teaching of the Geometry. Universidad Nacional, Costa Rica, 2013.

MLA Citation

Vargas Vargas, Gilberto, and Ronny Gamboa Araya. The Van Hiele Model and the Teaching of the Geometry. Universidad Nacional, Costa Rica, 2013.

Warning: These citations may not always be 100% accurate.