1. Aller, L., Bennett, T., Lehr, J.H., Petty, R.J. and Hackett G., 1987, DRASTIC: A standardized system for evaluating groundwater pollution potential using hydrogeological settings. Prepared for the U.S. Environmental Protection Agency, Office of Research and Development, EPA-600/2-87-035. National Water Well Association, Dublin, Ohio.
2. Apleyard, S.J., 1996, Impact of liguid waste disposal on potable groundwater resources near Perth. Environmental Geology, 28, 106–110.
3. Ayers, R.S. and Westcot, D.W., 1985, Water Quality for Agriculture. FAO Irrigation and Drainage Paper No. 29, Rev. 1, U. N. Food and Agriculture Organization, Rome.
4. Bagch, A., 1994, Design, Contruction and Monitoring of landfill, John Wiley & Sons, 2.nd edn, pp 99–107, Canada.
5. Celik, M., 2002, Water quality assesstment and the investigation of the relationship between the River Delice and the aquifer systems in the vicinity of Yerköy (Yozgat), Environmental Geology, 42, 690–700.