Famobuwa, O. E., A. A. Agbowuro, E. A. Adekunbi, and M. A. Akinwale. “Isolation and Characterization of Bergapten from the Root Bark of Ficus Exasperata (Vahl)”. International Journal of Biochemistry Research & Review 25, no. 3 (March 25, 2019): 1-5. Accessed March 30, 2020. http://journalijbcrr.com/index.php/IJBCRR/article/view/30075.