Yadessa, M., T. Hailemichael, D. Aman, and A. Teshome. “ANTIBACTERIAL TRITERPENOID FROM THE LEAVES EXTRACT OF EHRETIA CYMOSA”. Ethiopian Journal of Science and Sustainable Development, Vol. 5, no. 2, Feb. 2019, pp. 42 -53, doi:10.20372/ejssdastu:v5.i2.2018.12.