Abu Nada، M. K.، Keshta، A. S.، و Abu Shawish، J. I. S. (2022). A Suggested Program Based on 21st -Century skills and its Effect on Improving 9th Graders' Reading Comprehension Skills and English Language Learning Self-Efficacy (رسالة دكتوراه غير منشورة). الجامعة الإسلامية (غزة)، غزة. مسترجع من http://search.mandumah.com/Record/1357479
Abu Nada، Mazen Khalil، Awad Soliman Keshta، و Jaber Ibrahim Saleh Abu Shawish. "A Suggested Program Based On 21st -Century Skills and Its Effect On Improving 9th Graders' Reading Comprehension Skills and English Language Learning Self-Efficacy" رسالة دكتوراه. الجامعة الإسلامية (غزة)، غزة، 2022. مسترجع من http://search.mandumah.com/Record/1357479