Zakir، F. A. A. (1982). PRELIMINARY STUDY OF THE GEOLOGY AND TECTONICS OF THE RAGHAMA FORMATION MAQNA AREA, WADI AS'SIRHAN QUADRANGLE KINGDOM OF SAUDI ARABIA (رسالة دكتوراه غير منشورة). South Dakota School of Mines and Technology، رابيد. مسترجع من http://search.mandumah.com/Record/616168
Zakir، Fawaz Abd Alrahman. "PRELIMINARY STUDY OF THE GEOLOGY AND TECTONICS OF THE RAGHAMA FORMATION MAQNA AREA, WADI AS'SIRHAN QUADRANGLE KINGDOM OF SAUDI ARABIA" رسالة دكتوراه. South Dakota School of Mines and Technology، رابيد، 1982. مسترجع من http://search.mandumah.com/Record/616168