Goldberg, Howard. "Estimates of Emigration from Mexico and Illegal Entry Into the United States, 1960-1970, by the Residual Method." Final Research Paper, Georgetown University, Center for Population Research [photocopy], undated

Goldberg, Howard. "Estimates of Emigration from Mexico and Illegal Entry Into the United States, 1960-1970, by the Residual Method." Final Research Paper, Georgetown University, Center for Population Research [photocopy], undated, Box: 173, Folder: 1. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389106 Accessed September 26, 2026.