Unikel Spector, L. 1972. Martín Sable. Latín American urbanization : a guide to the literature, organizations and personnel. Metuchen, N.J : The Scarecrow Press Inc., 1971. 1071 p. Estudios Demográficos y Urbanos. 6, 01 (ene. 1972), 112–114. DOI:https://doi.org/10.24201/edu.v6i01.195.