Abu Hamed، H. I. H.، و عقل، فواز محمد عبدالرحمن. (2003). The Most common educational difficulties in teaching English in 5th and 6th grades as perceived by English language teachers in northern districts of Palestine (رسالة ماجستير غير منشورة). جامعة النجاح الوطنية، نابلس. مسترجع من http://search.mandumah.com/Record/583719
Abu Hamed، Hisham Izzat Hamoudeh، و فواز محمد عبدالرحمن عقل. "The Most Common Educational Difficulties in Teaching English in 5th and 6th Grades As Perceived By English Language Teachers in Northern Districts of Palestine" رسالة ماجستير. جامعة النجاح الوطنية، نابلس، 2003. مسترجع من http://search.mandumah.com/Record/583719