يحيى علي يحيى سعد 2022. Effectiveness of a Proposed Program for Using Smartphones in Developing the Skills of Functional Expression among First-Year Secondary Students in Sana’a City. المجلة الدولية لتطوير التفوق. 13, 1 (2022), 79–105. DOI:https://doi.org/10.20428/ijtd.v13i1.2004.