Pérez, Lisseth Alexandra, and Jenny Margoth Gamboa Salinas. “Quality in Service, a Potential Foundation of Competitiveness in the Informal Market of Shoes”. Espirales Revista Multidisciplinaria de investigación 4, no. 32 (March 26, 2020): 36–49. Accessed April 20, 2026. https://revistaespirales.com/index.php/es/article/view/710.