López-Arellano, Hernán, Mauricio Vélez-Salazar, and Jorge Ariel Franco-López , trans. “Perceptions of High School Principals about Teacher Motivation in in the Metropolitan Area of Medellin, 2015”. Revista Electrónica Educare 21, no. 2 (April 14, 2017): 1–23. Accessed November 23, 2024. https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/7556.