Essa, Mariam Saeed Ibrahim, and M.A. Abdalmajed. “Assessment of Personal Hygiene Attitudes Among Primary School Pupils in Umbada Locality, Khartoum State (2018-2020), Sudan”. ABC Research Alert, vol. 10, no. 3, Nov. 2022, pp. 64-71, https://doi.org/10.18034/ra.v10i3.639.