Knowledge-to-Action Guides, A. Turnbull, Zuna, Hong, Hu, Kyzar, Obremski, Summers, H.R. Turnbull, Stowe in Teaching Exceptional Children, Volume 42, Number 3, 2010, Box: 2, Folder: 40. Personal papers of Rud Turnbull, PP 511. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/304926 Accessed June 17, 2025.