1. Akinyemi, L. P. (2011). Physico-Chemical characterisation of oil Sands at Imeri in Ogun State, Southwest, Nigeria. An M.Sc Thesis, Olabisi Olabanjo University, Ago-Iwoye, Nigeria
2. Buchholz, R. A. (1998) Principle of environmental Management. The Greening of Business, 2nd Edition, Prentice Hall, London, UK
3. DWAF (1996): Department of Water Affairs and Forestry. Water Quality Guideline, Aquatic Ecosystem Use. 1st Edn, Vol. 7 DWAF, Pretoria