Valenzuela, M. B.; Massey, D. S.; Alarcón, R.; Durand, J.; González, H. Douglas S. Massey, Rafael Alarcón, Jorge Durand Y Humberto González. Returnn to Aztlan : The Social Process of International Migration from Western Mexico. [Berkeley] : University of California Press, 1987. Estud. Sociol. 1989, 7, 386-388.