MONTENEGRO GUILLÉN, Salvador. Editorial Vol.6(9). Universidad y Ciencia, [S. l.], v. 6, n. 9, 2015. DOI: 10.5377/uyc.v6i9.1948. Disponível em: https://www.camjol.info/index.php/UYC/article/view/1948. Acesso em: 6 dic. 2025.