Obiero, L.S.,Msanzu, J.B, Chimbevo, M.L., Malala, J.B, Gicharu, G.K. “Isolation and Identification of Heavy Metal Resistant Bacteria Producing Enzymes from Industrial, Laboratory and Dumping Sites Wastes in Mombasa County”. AFRICAN JOURNAL OF SCIENCE, TECHNOLOGY AND ENGINEERING (AJSTE) , Vol. 1, no. 1, Sept. 2020, pp. 34-45, http://journal.kyu.ac.ke/index.php/library1/article/view/57.