1. Negative Feedback as Regulation and Second Language Learning in the Zone of Proximal Development
2. Alvarez, B. (2011). Flipping the classroom: Homework in class, lessons at home. Retrieved from http://www.learningfirst.org/flipping-classroom-homework-class-lessons-home
3. American Council on the Teaching of Foreign Languages (ACTFL). (2010). Use of the target language in the classroom. Position Statements. Retrieved from http://www.actfl.org/news/position-statements/use-the-target-language-the-classroom-0
4. Telecollaboration 2.0: Using Facebook for intercultural exchange.;K.Aoki;Proceedings of the World Conference on Educational Multimedia, Hypermedia and Telecommunications,2009