Khalil، B. A. (2000). Gold Minerlization in the Sudan and the Impact of its Mining on the Environment. مجلة دراسات حوض النيل، مج1, ع2 ، 1 - 9. مسترجع من http://search.mandumah.com/Record/607608
Khalil، Badr Aldin. "Gold Minerlization in the Sudan and the Impact of Its Mining On the Environment." مجلة دراسات حوض النيل مج1, ع2 (2000): 1 - 9. مسترجع من http://search.mandumah.com/Record/607608