Sources

1. http://kevan.org/johari. See also: Luft, J., & Ingham, H. (1955). The Johari window: A graphic model of interpersonal awareness. Proceedings of the western training laboratory in group development. Los Angeles: UCLA. See also: Riso, D. R., & Hudson, R. (1999). The wisdom of the Enneagram: The complete guide to psychological and spiritual growth for the nine personality types. New York: Bantam Books.

2. http://ketsdevries.com/instruments/iti/iti.html.

3. www.enneagraminstitute.com/. See also: Riso, D. R., & Hudson, R. (1999). The wisdom of the Enneagram: The complete guide to psychological and spiritual growth for the nine personality types. New York: Bantam Books.

4. www.cook-greuter.com/. See also: Cook-Greuter, S. (2006). 20th Century ...

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