Partido Revolucianario Institucional, VII Asamblea Nacional Ordinaria - 1972 (1-2), 1972-1973

Partido Revolucianario Institucional, VII Asamblea Nacional Ordinaria - 1972 (1-2), 1972-1973, Box: 42, Folder: 5-6. Stanley R. Ross Papers, 972737976. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/492058 Accessed September 26, 2026.