1. Amouei, A., Mahvi, A.H., Mohammadi, A.A., Fallah, S.H., Asgharnia, H.A. and Khafajeh, A.A. (2012). Physical and Chemical Quality Assessment of Potable Groundwater in Rural Areas of Khaf, Iran. Wrld Appl Sc J, 18(5): 693–697.
2. Ayoob, S. and Gupta, A.K. (2006). Fluoride in drinking water: A review on the status and stress effects. Critical Reviews in Environmental Science and Technology, 36: 433–487.
3. Azizullah, A., Khattak, M.N.K., Richter, P. and Häder, D. (2011). Water pollution in Pakistan and its impact on public health – A review. Environ Inter, 37: 479–497.
4. Bailey, K., Chilton,J., Dahi, E., Lennon,M., Jackson, P. and Fawell. J. (Eds) (2006) Fluoride in Drinking-water. World Health Organization, Geneva
5. Banks, D., Frengstad, B., Midtġard, A., Jan, R.K. and Strand, T. (1998). The chemistry of Norwegian groundwaters: I. The distribution of radon, major and minor elements in 1604 crystalline bedrock groundwaters. The Sc Tot Environ, 222: 71–91.