Echevarria, J., Short, D., & Vogt, M.E. (2008). Implementing the SIOP® Model through effective professional development and coaching. Boston, MA: Pearson Allyn & Bacon.
Echevarría, J., Vogt, M.E., & Short, D. (2017). Making content comprehensible for English learners: The SIOP® Model. (5th ed.) Boston: Pearson Allyn & Bacon.
Yoon, K.S., Duncan, T., Lee, S. W.-Y., Scarloss, B., & Sharpley, K. (2007). Reviewing the evidence on how teacher professional development affects student achievement (Issues & Answers Report, REL 2007–No. 033). Washington, DC: U.S. Department of Education, Institute of Education Sciences, National Center for Education Evaluation and Regional Assistance, Regional Educational Laboratory Southwest.
Retrieved from http://ies.ed.gov/ncee/edlabs