Philip Crosby - correspondence and royalty (1977-1983) - Turn Your People On (1979), Art of Getting Your Own Sweet Way (1979, 1971), Quality is Free (1979), Box: 3, Folder: 60. Corporate Papers of the Robert Mills Literary Agency, MS 307. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/229645 Accessed May 16, 2024.