1. Adey, P. (2007). The professional development of teachers: Practice and theory. Springer Science & Business Media.
2. Álvarez - Valencia, J. (2009). An exploration of Colombian EFL teachers' knowledge base through teachers' reflection. Linguagem & Ensino, 12, 73-108.
3. Álvarez-Aguirre, G., & Sánchez-Prada, C. (2005). Teachers in a Public School Engage in a Study Group to Reach General Agreements about a Common Approach to Teaching English. PROFILE Issues in Teachers' Professional Development, 6(1), 119-132.
4. Borg, M. (2004). The apprenticeship of observation. ELT Journal, 58(3), 274-276. https://doi.org/10.1093/elt/58.3.274
5. Brown, H., & Bradford, A. (2017). EMI, CLIL, & CBI: Differing approaches and goals. In P. Clements, A. Krause, & H. Brown (Eds.), Transformation in language education. Tokyo: JALT.