Gruber, H. E., Terrell, G., & Wertheimer, M. (1962). Contemporary approaches to creative thinking: A symposium held at the University of Colorado. New York: Atherton Press.
Παραπομπή Chicago StyleGruber, Howard E., Glenn Terrell, and Michael Wertheimer. Contemporary Approaches to Creative Thinking: A Symposium Held At the University of Colorado. New York: Atherton Press, 1962.
Παραπομπή MLAGruber, Howard E., Glenn Terrell, and Michael Wertheimer. Contemporary Approaches to Creative Thinking: A Symposium Held At the University of Colorado. New York: Atherton Press, 1962.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.