Bello، A. A. (2007). DEVELOPENT AS A HISTORICAL PROCESS IN THE NUBA MOUNTAINS REGION IN SUDAN. دراسات إفريقية، ع38 ، 344 - 355. مسترجع من http://search.mandumah.com/Record/701095
Bello، Abd Alrouf. "DEVELOPENT AS A HISTORICAL PROCESS IN THE NUBA MOUNTAINS REGION IN SUDAN." دراسات إفريقية ع38 (2007): 344 - 355. مسترجع من http://search.mandumah.com/Record/701095