Ogbiko, C., Okoh, E.V.C., & Abubakar, H. (2021). Phytochemical Screening, In vitro Antioxidant Activity and Polyphenolic Content of the Leaves of Nigerian Ziziphus spina – Christi (L.) Willd. International Journal of Science for Global Sustainability, 6(4), 10. Retrieved from https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/62