Mogollón, Mabel, Nixon Zambrano, and Alejandra Moncada. “Effects of Noise on the Vocal Quality of Educational Institute Teachers”. Revista de Investigación e Innovación en Ciencias de la Salud 2, no. 1 (October 12, 2020): 15–27. Accessed April 19, 2024. https://riics.info/index.php/RCMC/article/view/41.