Portillo-Torres, Mauricio Cristhian, Óscar Hernández-Quesada, and Hannia Quirós-Quirós , trans. 2016. “Teachers and Students Opinions of Physical Education Classes in High School”. Revista Electrónica Educare 20 (2): 1-23. https://doi.org/10.15359/ree.20-2.5.