Ashour، J. M.، و Keshta، A. S. (2014). The Effect of Using a Videoconferencing-based Strategy on UNRWA 9th Graders' English Speaking Skills and their Attitudes towards Speaking (رسالة ماجستير غير منشورة). الجامعة الإسلامية (غزة)، غزة. مسترجع من http://search.mandumah.com/Record/695222
Ashour، Jehan Mahmoud، و Awad Soliman Keshta. "The Effect of Using a Videoconferencing-based Strategy On UNRWA 9th Graders' English Speaking Skills and Their Attitudes Towards Speaking" رسالة ماجستير. الجامعة الإسلامية (غزة)، غزة، 2014. مسترجع من http://search.mandumah.com/Record/695222