"Quality Evaluation of Set Yoghurt Produced by Two Factories in Khartoum State, Sudan" (2025) University of Khartoum Journal of Agricultural Sciences, 18(2). موجود في: https://onlinejournals.uofk.edu/uofkjas/article/view/1968 (تاريخ الوصول: 25 مايو 2026).