Pedrero, Mercedes. «Leo Grebler, Mexican Immigrants to the United States : The Record and Its Implications. Mexican-American Study Project, Advance Report 2 Los Ángeles, University of California, 1966. Xxx, 519 P». Estudios Demográficos y Urbanos 2, no. 01 (enero 1, 1968): 111–112. Accedido junio 16, 2025. https://estudiosdemograficosyurbanos.colmex.mx/index.php/edu/article/view/65.