RUIZ GAYTÁN, B. Justo Sierra y la Escuela de Altos Estudios. Historia Mexicana, [S. l.], v. 16, n. 4, p. 541–564, 1967. Disponível em: https://historiamexicana.colmex.mx/index.php/RHM/article/view/1119. Acesso em: 1 may. 2024.