1. Asseed M. Turjoman A. and Eteway H. (1983). “Water use for agriculture in Al‐Hassa area in Eastern Province ” presented at the April 17–20 1983 Symposium on Water Resources in Saudi Arabia: Its Management Treatment and Utilization College of Engineering King Saud University Riyadh Saudi Arabia.
2. Burman R. D. Richard P. A. and Munari A. C. (1975). “Evapotranspiration estimates for water right transfers.” Proc. ASCE Irrigation and Drainage Specialty Conference Logan Utah 173–195.
3. “Consumptive use of alfalfa in Al‐Hassa region.” (1973). Publication No. 8 Hofuf Agricultural Research Centre Hofuf Saudi Arabia.
4. Doorenbos J. and Pruitt W. O. (1977). “Crop water requirements.” Irrigation and Drainage Paper 24 Food and Agricultural Organization of the United Nations Rome Italy.
5. Hansen V. E. Isrealsen O. W. and Stringham G. E. (1980). Irrigation principles and practices 4th ed. John Wiley and Sons Inc. New York N.Y.