1. Broad, I., Dorsch, I., Lyons, A. & Schroeder, Z. (2011). Educating for global competence: A case study of north woods international school. Retrieved from http://digital.library.wisc.edu/1793/66066
2. Castek, J., Leu, D. J., Coiro, J., Gort, M., Henry, L. A. & Lima, C. O. (2007).
3. Research Methods in Education