ALKHATEEB , F. . The Effect of a Proposed Volunteer Program on Developing Educational values for Eighth Grade Students. Dirasat: Educational Sciences, [S. l.], v. 48, n. 1, p. 170–189, 2021. Disponível em: https://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/2542. Acesso em: 3 dec. 2025.