فضل السيد عثمان فضل السيد أحمد; حسن سليمان محمد محمد الهادي. The level of commitment to health behavior that prevents the Coronavirus "Covid 19" among the Sudanese: تاريخ الاستلام:2020/10/31م تاريخ القبول:2020/12/17. Human Resources Development Research, [S. l.], v. 16, n. 01, p. 379–402, 2021. Disponível em: https://rdrh.univ-setif2.dz/index.php/rdrh/article/view/265. Acesso em: 2 nov. 2026.