Parent involvement as viewed by parents of preschool handicapped children, Winton and A. Turnbull in TECSE, Volume 1, Number 3, 1981, Box: 9, Folder: 43. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/305190 Accessed June 19, 2025.