“Faecal Coliforms (FC) and Faecal Streptococci (FS) Ratio as Tool for Assessment of Water Contamination: A Case Study of River Sokoto, Northwestern Nigeria” (2015) The Asia Journal of Applied Microbiology, 2(3), pp. 27–34. doi:10.18488/journal.33/2015.2.3/33.3.27.34.