Lawan, N., and Garba, A. D. “Evaluation of Water Sanitation and Hygiene (WASH) Infrastructure in Public Secondary Schools in Sokoto Metropolis”. Savannah Journal of Science and Engineering Technology, vol. 2, no. 05, Apr. 2025, pp. 227-38, https://www.sajsetjournal.com.ng/index.php/journal/article/view/125.