Cardenas, Gilbert. "Ph.D. Examination for Gilberto Cardenas.", 1973 April 10

Cardenas, Gilbert. "Ph.D. Examination for Gilberto Cardenas.", 1973 April 10, Box: 160, Folder: 3. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/388767 Accessed September 27, 2026.