Staff writer. "Eric Berne, Founder". itaaworld.org. The International Transactional Analysis Association. Archived from the original on October 1, 2015. Retrieved October 12, 2015.
Staff writer. "Eric Berne, Founder". itaaworld.org. The International Transactional Analysis Association. Archived from the original on October 1, 2015. Retrieved October 12, 2015.