Al Mutib، S.، و Frechette، E. (1989). PUNCTUATION AND READING COMPREHENSION AMONG SEVENTH AND EIGHTH GRADE STUDENTS IN A UNIVERSITY LAB SCHOOL: AN ASSESSMENT (رسالة دكتوراه غير منشورة). Florida State University، تالاهاسي. مسترجع من http://search.mandumah.com/Record/612198
Al Mutib، Saleh، و Ernest Frechette. "PUNCTUATION AND READING COMPREHENSION AMONG SEVENTH AND EIGHTH GRADE STUDENTS IN A UNIVERSITY LAB SCHOOL: AN ASSESSMENT" رسالة دكتوراه. Florida State University، تالاهاسي، 1989. مسترجع من http://search.mandumah.com/Record/612198