Al Omair، A. A. R.، و Corbitt، H. K. (1981). Using games and puzzles in teaching mathematics in Saudi elementary schools to increase students' motivation in learning mathematics (رسالة ماجستير غير منشورة). University of Kansas، لورانس. مسترجع من http://search.mandumah.com/Record/619180
Al Omair، Abdulaziz Abdul Rohman، و Hary Kay Corbitt. "Using Games and Puzzles in Teaching Mathematics in Saudi Elementary Schools to Increase Students' Motivation in Learning Mathematics" رسالة ماجستير. University of Kansas، لورانس، 1981. مسترجع من http://search.mandumah.com/Record/619180