Sallau, A. A., and A. B. Abubakar. “Inhibition Effect of Ethanolic Extract of Ipomoea Batatas Peel on the Corrosion of Mild Steel in Hydrochloric Acid Medium”. Journal of Science and Mathematics Letters, vol. 8, no. 1, Dec. 2019, pp. 16-26, doi:10.37134/jsml.vol8.1.3.2020.