Chandler, John T., and John Plakos. "Spanish-Speaking Pupils Classified as Educable Mentally Retarded." Mexican-American Education Research Project, 1969

Chandler, John T., and John Plakos. "Spanish-Speaking Pupils Classified as Educable Mentally Retarded." Mexican-American Education Research Project, 1969, Box: 161, Folder: 17. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/388811 Accessed September 27, 2026.