Ibrahim، O. S. O.، و Hussein، R. F. (1994). An evaluation of English training programme held by Yarmouk University and its effect on the gain of Tawjihi students of Tawjihi Students of English Structures (رسالة ماجستير غير منشورة). جامعة اليرموك، إربد. مسترجع من http://search.mandumah.com/Record/725648
Ibrahim، Ola Shaker Oklah، و Riyad Fayez Hussein. "An Evaluation of English Training Programme Held By Yarmouk University and Its Effect On the Gain of Tawjihi Students of Tawjihi Students of English Structures" رسالة ماجستير. جامعة اليرموك، إربد، 1994. مسترجع من http://search.mandumah.com/Record/725648