SUHAIL, T. F. . Effectiveness of in-service training program to develop the professional performance of teachers in the special education complex / Al-Quds Open University. Dirasat: Educational Sciences, [S. l.], v. 47, n. 3, p. 16–31, 2020. Disponível em: https://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/2369. Acesso em: 23 dec. 2025.