Aba Alhassan، K. M. I.، و Pagnucci، G. S. (2002). ENGLISH AS A FOREIGN LANGUAGE INSTRUCTION WITH CALL MULTIMEDIA IN SAUDI ARABIAN PRIVATE SCHOOLS: A MULTI-CASE AND MULTI-SITE STUDY OF CALL INSTRUCTORS' PEDAGOGIES AND BELIEFS (رسالة دكتوراه غير منشورة). Indiana University، إنديانا. مسترجع من http://search.mandumah.com/Record/612573
Aba Alhassan، Khalid M. I.، و Gian S. Pagnucci. "ENGLISH AS A FOREIGN LANGUAGE INSTRUCTION WITH CALL MULTIMEDIA IN SAUDI ARABIAN PRIVATE SCHOOLS: A MULTI-CASE AND MULTI-SITE STUDY OF CALL INSTRUCTORS' PEDAGOGIES AND BELIEFS" رسالة دكتوراه. Indiana University، إنديانا، 2002. مسترجع من http://search.mandumah.com/Record/612573