Alba, F. (1971). J. D. B. DeBow [ed.], Statistical View of the United States. Demographic Monographs, v. 5, Nueva York, Gordon and Breach Science Publishers, 1970, 400 p. Estudios Demográficos y Urbanos, 5(01), 118–119. https://doi.org/10.24201/edu.v5i01.151