1. Aldahmash, A. H., Alshamrani, S. M., Alshaya, F. S., & Alsarrani, N. A. (2019). Research Trends in İn-Service Science Teacher Professional Development from 2012 to 2016. International Journal of Instruction, 12(2), 163-178. https://doi.org/10.29333/iji.2019.12211a
2. Avalos, B. (2011). Teacher professional development in Teaching and Teacher Education over ten years. Teaching and teacher education, 27(1), 10-20. https://doi.org/10.1016/j.tate.2010.08.007
3. Blank, R. K., & de las Alas, N. (2009). The effects of teacher professional development on gains in student achievement: How meta-analysis provides scientific evidence useful to education leaders. Council of Chief State School Officers. https://files.eric.ed.gov/fulltext/ED544700.pdf
4. Borko, H., Jacobs, J., Eiteljorg, E., & Pittman, M. E. (2008). Video as a tool for fostering productive discourse in mathematics professional development. Teaching and Teacher Education, 24, 417-436. https://doi.org/10.1016/j.tate.2006.11.012
5. Borko, H., Koellner, K. A., Jacobs, J. K., Roberts, S. A., Baldinger, E., & Risley, R. (2010). Preparing instructional leaders to facilitate mathematics professional development [Paper presentation]. AERA conference 2010, Denver.