1. American Educational Research Association (2004). English language learners: boosting academic achievement (Vol. 2, Issue 1). Issue researcher: C. E. Snow; Issue reviewers: D. August, R. Gersten, and L. Siegel. Retrieved from American Educational Research Association Research Points website.
http://www.aera.net/ResearchPoints.htm
.
2. An, S., Kulm, G., & Wu, Z. (2004). The pedagogical content knowledge of middle school mathematics teachers in China and the US. Journal of Mathematics Teacher Education, 7, 145–172.
3. Ball, D. L., & Bass, H. (2000). Interweaving content and pedagogy in teaching and learning to teach: knowing and using mathematics. In J. Boaler (Ed.), Multiple perspectives on the teaching and learning of mathematics (pp. 83–104). Westport: Ablex.
4. Ball, D. L., Lubienski, S., & Mewborn, D. (2001). Research on teaching mathematics: the unsolved problem of teachers’ mathematical knowledge. In V. Richardson (Ed.), Handbook of research on teaching (4th ed.). New York: Macmillan Co.
5. Ball, D. L., Hill, H., & Bass, H. (2005). Knowing mathematics for teaching: who knows mathematics well enough to teach third grade. American Educator, Fall, 2005.