M. MUSYOKI, ABEDNEGO, MBARUK A. SULEIMAN, JOHN N. MBITHI, and JOHN M. MAINGI. 2012. “WATER-BORNE BACTERIAL PATHOGENS IN SURFACE WATERS OF NAIROBI RIVER AND HEALTH IMPLICATION TO COMMUNITIES DOWNSTREAM ATHI RIVER: Life Science-Environmental Microbiology”. International Journal of Life Science and Pharma Research 3 (1):L4-L10. https://ijlpr.com/index.php/journal/article/view/303.