TANHEED ADEL FATHAL AL-BYIRAG, D. PSYCHOLOGICAL PRESSURE AND ITS RELATIONSHIP WITH PSYCHOLOGICAL STIFFNESS of STUDENTS at THE COLLEGE OF EDUCATION. College of Basic Education Research Journal, [S. l.], v. 11, n. 1, p. 28–56, 2012. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/38256. Acesso em: 25 oct. 2025.