John W. Gilson and John P. Hagedorn, Training - a systemmatic approach to personnel development, 1975, Box: 13, Folder: 61. International City/County Management Association (ICMA) records, RH MS 950. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/20646 Accessed May 01, 2024.