del Castillo Romo, R. ., C. . López-Mateo, and M. . Cañizarez-Espada. “Employment Dynamics and Outsourcing in Celaya, Mexico: An Analysis by Economic Sector”. RAN - Revista Academia & Negocios, vol. 5, no. 2, Nov. 2020, pp. 69-84, https://revistas.udec.cl/index.php/ran/article/view/2608.