1. Barrs, H. D. (1968).Determination of Water Deficit in Plant Tissues. Water Deficits and Plant Growth.Volume 1. Academic Press, New Delhi, India. 268 pp.
2. FAO (Food and Agricultural Organization of the United Nations). (2003).Review of Word Water Resources by Country.Water Reports 23. FAO, Rome, Italy. 110 pp.
3. Feigin, A., Ravina, I. and Shalhevet, J. (1991).Irrigation with Treated Sewage Effluent.Springer-Verlag, Berlin, Germany. 224 pp.
4. Parnell, J. R. (1998).Project Greenleaf Final Report.Public Utilities Department, City of St. Petersburg, FL, USA. 500 pp.
5. Wu, L. and Dodge, L. (2005).Landscape Plant Salt Tolerance Selection Guide for Recycled Water Irrigation. A Special Report for the Elvenia J. Slosson Endowment Fund.University of California, Davis. CA, USA. 40 pp.