Refernces
- Gestalt Psychology Dr. C. George Boeree. Retrieved May 7, 2007.
- Goldstein, E B. Sensation and Perception. Belmont, CA: Wadsworth, Cengage Learning, 2010. Print.
- Hothersall, David. 1995. History of Psychology. New York: McGraw-Hill.
- "Wertheimer, Max." New World Encyclopedia, . 2 Apr 2008, 10:45 UTC. 15 Nov 2012, 04:43 <http://www.newworldencyclopedia.org/p/index.php?title=Wolfgang_K%C3%B6hler&oldid=680987>.