Language Intervention from Ape to Child: Language Intervention Series Volume 3 edited by Schiefelbusch and John H. Hollis, 1979, Box: 10, item: 9-11. Personal Papers of Richard Schiefelbusch, PP 458. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/266520 Accessed November 30, 2024.