O. Adenike, A.-O. and A. Ayansina, D. 2022. Occurrence of Extended Spectrum Beta Lactamase (ESBL) Producing Gram-Negative Bacteria in Wastewaters from Selected Hospitals in Ibadan, Oyo State, Nigeria. Tropical Journal of Natural Product Research (TJNPR). 6, 5 (May 2022), 826–830.