Technological Pedagogical Content Knowledge (TPACK): The Development and Validation of an Assessment Instrument for Preservice Teachers. Journal of Re - search on Computing in Education, 42(2), 123-149.

Schmidt, D.A., Baran, E., & al. (2009). Technological Pedagogical Content Knowledge (TPACK): The Development and Validation of an Assessment Instrument for Preservice Teachers. Journal of Re - search on Computing in Education, 42(2), 123-149. Retrieved from http://dx.doi.org/10.1080/15391523.2009.10782544