M. S. I. . Essa, M. E. A. . Yousif, and M. . Abdalmagid, “Assessment of Personal Hygiene Practices among Primary School Pupils in Umbada locality, Khartoum state, Sudan (2018-2020)”, ABC res. alert, vol. 10, no. 3, pp. 23–31, Oct. 2022, doi: 10.18034/ra.v10i3.629.