Dr. Azharia Abdelbagi Elbushra, Ali Abdelaziz Salih, and Omer Elgaili Elsheikh. 2012. “Assessment of Agricultural Taxes Reform on Sudanas Economy”. Global Journal of Science Frontier Research 12 (D6):13-22. https://journalofscience.org/index.php/GJSFR/article/view/100308.