El Wedyani، S. G.، و Kreidler، C. W. (1982). A CROSS-SECTIONAL INVESTIGATION OF THE PRODUCTION, RECOGNITION, AND SENSITIVITY OF SOEE ARAB LEA&~ERS OF ENGLISH AS A FOREIGN LANGUAGE (رسالة دكتوراه غير منشورة). Georgetown University، واشنطن. مسترجع من http://search.mandumah.com/Record/619681
El Wedyani، Sulaiman G.، و Charles W. Kreidler. "A CROSS-SECTIONAL INVESTIGATION OF THE PRODUCTION, RECOGNITION, AND SENSITIVITY OF SOEE ARAB LEA&~ERS OF ENGLISH AS A FOREIGN LANGUAGE" رسالة دكتوراه. Georgetown University، واشنطن، 1982. مسترجع من http://search.mandumah.com/Record/619681