Salihu, S., I. Yusuf, A. Abba, M. Tijjani, U. Maina, and B. Shamaki. “Heavy Metal Toxicosis and Male Fertility: The Role of Pentahydroxyflavone Quercetin: A Review”. Journal of Applied Sciences and Environmental Management, vol. 25, no. 7, Nov. 2021, pp. 1277-8, doi:10.4314/jasem.v25i7.25.