Al Haj، A. A. M. A. (2010). Motivation as a Contributing Factor in Learning EFL: A Case Study of Khartoum State Secondary Students. مجلة كلية الآداب، ع 3 ، 25 - 40. مسترجع من http://search.mandumah.com/Record/495466
Al Haj، Abd Algayoum Mohammed Ahmed. "Motivation As a Contributing Factor in Learning EFL: A Case Study of Khartoum State Secondary Students." مجلة كلية الآداب ع 3 (2010): 25 - 40. مسترجع من http://search.mandumah.com/Record/495466