Gustafson, R. (2007). The Flower and Fruit of Health, Virtue, and Happiness: Inwardness Turned Outward in American Public School Music Instruction from the Early Decades to the Present. Profesorado, Revista De Currículum Y Formación Del Profesorado, 11(3), 14. Recuperado a partir de https://revistaseug.ugr.es/index.php/profesorado/article/view/20065