Juma، K. Y. M.، و Sheir، A. A. (2008). The Effect of a Culture-Based Instructional Program on Palestinian Secondary Stage Students' Achievement in English and Attitudes Towards its Culture (رسالة دكتوراه غير منشورة). جامعة عمان العربية، عمان. مسترجع من http://search.mandumah.com/Record/587477
Juma، Khader Youssef Mohd، و Awatef Ali Sheir. "The Effect of a Culture-Based Instructional Program On Palestinian Secondary Stage Students' Achievement in English and Attitudes Towards Its Culture" رسالة دكتوراه. جامعة عمان العربية، عمان، 2008. مسترجع من http://search.mandumah.com/Record/587477