Chapter 24: Partnering with Families of Children with Developmental Disabilities to Enhance Family Quality of Life, H.R. Turnbull, Summers, Poston in Research-Based Practices in Developmental Disabilities, second edition, 2008, Box: 2, Folder: 48. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304934 Accessed June 22, 2025.