Álvarez Martínez, G., Villalobos Ulate, N., & Valenzuela Arce, N. (2009). The Challenge Approach: An Innovative Teaching and Learning Pathway.
استشهاد بنمط شيكاغوÁlvarez Martínez, Gustavo, Nuria Villalobos Ulate, و Nandayure Valenzuela Arce. The Challenge Approach: An Innovative Teaching and Learning Pathway. 2009.
MLA استشهادÁlvarez Martínez, Gustavo, Nuria Villalobos Ulate, و Nandayure Valenzuela Arce. The Challenge Approach: An Innovative Teaching and Learning Pathway. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.