1. APHA (1998) Standard methods for the examination of water and wastewater, 20th edn. American Public Health Association, Washington, DC
2. Batayneh A, Zumlot T (2012) Multivariate statistical approach to geochemical methods in water quality factor identification: application to the shallow aquifer system of the Yarmouk Basin of North Jordan. Res J Environ Sci 4(7):756–768
3. Dahm CN, Grimm NB, Marmonier P, Valett HM, Vervier P (1998) Nutrient dynamics at the interface between surface waters and groundwaters. Freshwater Biol 40:427–451. https://doi.org/10.1046/j.1365-2427.1998.00367.x
4. Dalton GM, Upchurch S (1978) Interpretation of hydrochemical facies by factor analysis, vol 16. Groundwater 16(4):228–233
5. Daughney CJ, Reeves RR (2005) Definition of hydrochemical facies in the New Zealand National Groundwater Monitoring Programme. J Hydrol (New Zealand) 44:105–130