Hafaz Allah، I. M. (1977). Innovations in Educational Television Sets and in Their Equipment. تعليم الجماهير، س4, ع10 ، 22 - 24. مسترجع من http://search.mandumah.com/Record/657175
Hafaz Allah، Ibrahim Michel. "Innovations in Educational Television Sets and in Their Equipment." تعليم الجماهير س4, ع10 (1977): 22 - 24. مسترجع من http://search.mandumah.com/Record/657175