Παραπομπή APA

Álvarez Martínez, G., Villalobos Ulate, N., & Valenzuela Arce, N. (2009). The Challenge Approach: An Innovative Teaching and Learning Pathway.

Παραπομπή Chicago Style

Álvarez Martínez, Gustavo, Nuria Villalobos Ulate, και Nandayure Valenzuela Arce. The Challenge Approach: An Innovative Teaching and Learning Pathway. 2009.

Παραπομπή MLA

Álvarez Martínez, Gustavo, Nuria Villalobos Ulate, και Nandayure Valenzuela Arce. The Challenge Approach: An Innovative Teaching and Learning Pathway. 2009.

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