1. Acar, N. V. (1985). The study of the reliability and the validity of the College Self-Expression Scale [in Turkish]. Hacettepe Universitesi Sosyal Hizmetler Yuksekokulu Dergisi, 3 (1-2), 47-51.
2. Arnold, E. & Boggs, K. U. (1999). Interpersonal relationships, professional communication skills for nurses. Philadelphia: Saunders.
3. Aydin, G. (1993). The role of positive personality traits in the frequency of health problems. [in Turkish]. Psikiyatri, Psikoloji ve Psikofarmakoloji Dergisi, 1, 313-325.
4. Using Locus of Control to Empower Student Nurses to be Professional