1. Aller, L. Bennet, T. Lehr, J.H. Petty, R.J. and Hackett, G. (1987) DRASTIC: A standardized System for Evaluating Groundwater Potential Using Hydrogeologic Settings; EPA/600/285/018; U.S. Environmental Protection Agency: Washington, DC, USA.
2. Al-Adamat, R., Foster, I. and Baban, S. (2003) Groundwater vulnerability and risk mapping for the Basaltic aquifer of the Azraq basin of Jordan using GIS, Remote Sensing and DRASTIC. Appl. Geogr., v.23, pp.303–324.
3. Brief Industrial Profile of Sonepat District. http://dcmsmegov.in/old/dips/har_sonepat.pdf. (Secunda, Collin, & Melloul, 1998)
4. Brindha, K.L.E. (2015) Cross comparison of five popular groundwater pollution vulnerability index approaches. Jour. Hydrol., v.524, pp.597–613.
5. Business Standard (2019) Industrial pollutants surging cancer cases in villages near Sonipat. https://www.business-standard.com/article/news-ani/industrial-pollutants-surging-cancer-cases-in-villages-near-sonipat-119020300111_1.html