Authored References:

1. Brown, Lester R. and Halweil, Brian.  Populations Outrunning Water Supply as World Hits 6 Billion.  Worldwatch News Release, September 23, 1999.  http://www.worldwatch.org/alerts/990923.html.

2. Dalrymple, Max.  Xeriscaping.  November - December 1999. http://www.i5ive.com/article.cfm/xeriscaping/27730.  A very extensive series of articles discussing the practicality of xeriscaping and the numerous possibilities, considerations and functions of a xeric landscape.

3. Lohr, Virginia I and Bummer, Lenore H.  Assessing and influencing Attitudes toward Water-conserving Landscapes.  HortTechnology, April/June 1992, pp. 253-256.  This article analyzed the general attitude of people towards xeriscapes, offering hope that they will someday be more popular among the general public.

4. Riffle, Robert Lee.  The Tropical Look.  Copyright 1998, Timber Press, Portland, OR.  This book contains a brief exultation of xeric subtropical gardening, quoted here, and describes many xeric plants.

5. Schaeffer, Francis A.  Pollution and the Death of Man: The Christian View of Ecology.  Copyright 1970, Tyndale House Publishers, Wheaton, IL.  A rather interesting book which provides a perspective on the future of the Earth that is quite different from all the other references.  Rather than scaring everyone into conservation of resources before they are depleted, it focuses more on a positive outlook for the Earth that could result from everyone's responsible use of those resources.

6. Toepfer, Klaus.  Water Crisis Linked to Poor Governance, says Toepfer.  Excerpts from a press briefing at the Second World Water Forum, The Hague, March 2000.  http://www.unchs.org/unchs/english/hdv6n3/water_pgovn.htm.

7. Walters, James E., and Backhaus, Balbir.  Shade and Color with Water-Conserving Plants.  Copyright 1992, Timber Press, Portland, OR.  This excellent book describes in detail the specifics of xeriscaping and discusses many of the plants frequently used in a xeriscape.

References with anonymous authors:

8. Environment and Sustainable Development: Water Crisis. United Nations University, March 2000. http://www.unu.edu/env/water/water.html.

9. Future of Irrigated Agriculture Interpretive Summary.  Viewed May 12, 2001.  http://www.cast-science.org/irri_is.htm.  This reference is the one on which the original prediction was based.  Since the original prediction was not the main thrust of this article, the author felt justified in applying the prediction somewhat loosely to the other specifications for this web page.

10. Overview Of Water Quantity Issues In Oregon.  WaterWatch and the Oregon Conservation Network, 1999.  http://www.waterwatch.org/waquan.html.

11. Utah Rivers Council: Water Conservation.  Viewed May 12, 2001.  http://www.utahrivers.org/html/conservation.html.

12. Water: Critical Shortages Ahead?  Sustainable Development Information Service.  Viewed May 12, 2001. http://www.wri.org/wri/trends/water.html.

13. What is Xeriscaping?  Click10.com. Viewed May 12, 2001. http://www.click10.com/sh/news/watercrisis/stories/news-watercrisis-49385820010223-170228.html.  This reference provided information about the fundamentals of xeriscaping and its origins, including the seven basic principles.