Cita APA

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

Chicago Style Citation

Vargas Vargas, Gilberto, i Ronny Gamboa Araya. The Van Hiele Model and the Teaching of the Geometry. 2013.

Cita MLA

Vargas Vargas, Gilberto, i Ronny Gamboa Araya. The Van Hiele Model and the Teaching of the Geometry. 2013.

Atenció: Aquestes cites poden no estar 100% correctes.