Al Herz، J. A.، و Rees، J. (2011). An Investigation Into Factors Affecting Student in-Class Participation on an English Language Pre-Sessional Course (رسالة ماجستير غير منشورة). University of Birmingham، برمنغهام. مسترجع من http://search.mandumah.com/Record/609259
Al Herz، Jassim Abdullah، و Jonathan Rees. "An Investigation Into Factors Affecting Student In-Class Participation On an English Language Pre-Sessional Course" رسالة ماجستير. University of Birmingham، برمنغهام، 2011. مسترجع من http://search.mandumah.com/Record/609259