1. Sabour and Viker. Ethnic Encounter and Culture Change, Bergen/London 1997, p. 233-249.

2. Evenari, Shanon and Tadmor. The Negev: The Challenge of a Desert, Second Edition, Cambridge, MA and London, 1982, p. 171.

3. Negev, Avraham. Archaeological Encyclopedia of the Holy Land, Jerusalem, 1972.

4. Harris, Charles. Timesaver Standards for Landscape Architects, 2nd edition. McGraw-Hill, New York, 1998.

5. Winterbottom, Daniel. "Rainwater Harvesting," Landscape Architecture. April 2000, no 4. p. 40-46.

6. University of Florida

7. Portland Oregon residential example

8. Texas info

9. www.cityfarmer.org

10. www.greenbuilder.com