In Vitro Anti-Bacterial Activities of Aqueous, Ethanol and Chloroform Crude Extracts of Olinia Rochetiana and Vernonia Myriantha. J. Trop. Pharm. Chem 2020, 5 (2), 98–110. https://doi.org/10.30872/j.trop.pharm.chem.v5i2.181.