Nwankwo, E. O., E. U. Okey-kalu, and F. A. Eze. “Bacterial Contamination of Door Handles of Commercial Buses in Umuahia Metropolis Abia State”. Suan Sunandha Science and Technology Journal, vol. 10, no. 1, Dec. 2022, pp. 54-61, doi:10.53848/ssstj.v10i1.414.