APA ציטוט

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

Citación estilo Chicago

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

ציטוט MLA

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