Ennaggar، B. (1994). THE EFFECTIVENESS OF A THEORETICALLY DERIVED OBSERVATION STSTEM TDOS DESIGNED FOR SUPERVISING EFL TEACHERS IN THE SECOND PHASE OF BASIC EDUCATION. دراسات في المناهج وطرق التدريس، ع25 ، 21 - 45. مسترجع من http://search.mandumah.com/Record/682428
Ennaggar، Bahaa. "THE EFFECTIVENESS OF A THEORETICALLY DERIVED OBSERVATION STSTEM TDOS DESIGNED FOR SUPERVISING EFL TEACHERS IN THE SECOND PHASE OF BASIC EDUCATION." دراسات في المناهج وطرق التدريس ع25 (1994): 21 - 45. مسترجع من http://search.mandumah.com/Record/682428