Muhammad Muhammad, Shamsudeen, et al. “Antibacterial Activity of Piliostigma Thonningii Leaf Extract Against Gram-Negative Bacteria Isolated from Urine Samples”. APPLIED SCIENCE AND TECHNOLOGY REASERCH JOURNAL, vol. 4, no. 1, May 2025, pp. 54-63, doi:10.31316/astro.v4i1.7925.