Marín-Liébana, Pablo, José Blasco-Magraner, and Ana Botella-Nicolás. “Analysis of the Evolution of Primary Education Textbooks from a Critical Perspective: Study of the Musical Repertoire From 1994 to 2019”. Revista Electrónica Educare 26, no. 3 (August 21, 2022): 1-17. Accessed December 8, 2022. https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/13842.