Edward, M. E., N. N. Samuel, W. Stanley, and A. Gerald. “Synergistic Antimicrobial Activity of Crude Ethanolic Extracts of Garlic and Neem Leaves Against Bovine Mastitis Pathogens: An in Vitro Assay”. International Journal of Basic & Clinical Pharmacology, vol. 6, no. 9, Aug. 2017, pp. 2111-6, doi:10.18203/2319-2003.ijbcp20173732.