1. Breabăn I.G, Gheţeu, D, Paiu, M. Determination of Water Quality Index of Jijia and Miletin Ponds, Bulletin UASVM Agriculture. 2012. 69(2)/2012
2. World Health Organization. Water, sanitation and hygiene links to health. 2004. Available at: www.who.int/water_sanitation-health/publications/facts2004/en/index.html
3. Bullard W. E, Effects of Land use on Water Resources in the Ecology of Man: An Ecosystem Approach, Smith, R. L. (ed), New York, Harper and Row Publisher, 1972.
4. Johnson D.L, Ambrose, S.H, Bassett, T.J, Bowen, M.L, Crummey, D.E, Isaacson, J.S, Johnson, D.N., Lamb, P., Saul, M. and Winter-Nelson, A.E. (1997). Meanings of Environmental Terms. Journal of Environmental Quality, 26, 581-589.
5. Chapman D, (ed.). Water Quality Assessments: A Guide to the Use of Biota, Sediments and Water. Environmental Monitoring. Second Edition. UNESCO, WHO, and UNEP. E&FN Spon, London UK. 1996.