^Bass, Karen (2009-02-01). "Nature's Great Events:The Okavango Delta, Kalahari Desert" (PDF). press.uchicago.edu. University of Chicago Press. Retrieved 2012-04-26.
^ abcdefghi"Largest Desert in the World". Retrieved 2021-05-14.
^"Mapping Perennial Vegetation Cover in the Mojave Desert" (PDF). pubs.usgs.gov. USGS Western Geographic Science Center. 2011-06-01. Retrieved 2012-04-08.
^"Recoverability and Vulnerability of Desert Ecosystems". mojave.usgs.gov. USGS. 2006-03-03. Archived from the original on 2012-05-01. Retrieved 2012-04-14.
^ abWright, John W., ed. (2006). The New York Times Almanac (2007 ed.). New York, New York: Penguin Books. p. 456. ISBN 0-14-303820-6.