Some Issues Concerning the Control of Human Behavior - A Symposium, by Carl R. Rogers and B.F. Skinner (contained in "Science", November 30, 1956, Vol. 124, No. 3231), Box: 6, Folder: 24. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/34144 Accessed May 19, 2024.