Seventy of Disability and Income as Predictors of Parents's SAtisfaction with Their Family Quality of Life During Early Childhood Years, Wang, A. Turnbull, Summers, Little, Poston, Mannan, H.R. Turnbull in Research and Practice for Persons with Severe Disabilities, Volume 29, Number 2, 2004, Box: 2, Folder: 71. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304957 Accessed June 23, 2025.