1. Akbağ, M., 2000. Examination of Some Methods of Coping with Stress in University Students, Negative Automatic Thoughts by Transactional Analysis Ego States and Some Variables. Marmara Üniversites Eğitim Bilimleri Enstitüsü Doktora Tezi, İstanbul.
2. Perceptions of faculty members and student teachers: an evaluation from the aspect of transactional analysis;Akbağ;Kuram ve Uygulamada Eğitim Bilimleri Dergisi,2003
3. Akkoyun, F., 2001. Transactional Analysis Transactional Solving Approach in Psychology. Nobel Yayıncılık, 2. Baskı, Ankara.
4. Akgül, A., 2003. Statistical Analysis Techniques in Medical Research: “SPSS PROCEDURES”, Emek Ofset Ltd. Şti, 2. Baskı, Ankara.
5. Arı, R., 1989. University Students’ Ego States and Some Characteristics of Ego States’ Effect on Assertiveness and Level of Adjustment, Ankara Üniversitesi Sosyal Bilimler Enstitüsü Doktora Tezi, Ankara.