Orji Ikechukwu, Iroha Ifeanyichukwu, Ejikeugwu Chika, Eze Ukpai Agwu and Ogbu Ogbonnaya 2020. Cockroaches (Periplaneta americana) as possible reservoirs of extended spectrum beta-lactamase (ESBL)-producing pathogenic bacteria . International Journal of Research in BioSciences (IJRBS). 6, 3 (Aug. 2020), 41-49.