C. C. Maduka, H., C. E. Ugwu, A. N. Okpogba, P. N. Ogueche, C. C. Dike, C. O. Okonkwo, and C. C. Ihem-Avoaja. “Phytochemical Studies, Antioxidant Properties and Development of Dye Indicator from Aspilia Africana Leaves”. Journal of Applied Life Sciences International 18, no. 3 (August 23, 2018): 1-7. Accessed October 25, 2020. https://journaljalsi.com/index.php/JALSI/article/view/5951.