What is the appropriate citation for National Atlas information?
National Atlas of the United States, March 5, 2003, http://nationalatlas.gov Use the date found on the bottom of the Raw Data Download page. For individual layers, we suggest a slightly different format. Include the author and the map layer title, and use the publication date for the individual map layer, i.e. Chris Daly, Spatial Climate Analysis Service, September 2000, United States Average Annual Precipitation, 1961-1990, in National Atlas of the United States, http://nationalatlas.gov For National Atlas articles, we suggest including the article title and date. If authors are credited at the end of an article, cite them and any originating publication as well: Ecoregions of the United States, in National Atlas of the United States, January, 2005, http://nationalatlas.gov Consumer-Driven Agriculture, in National Atlas of the United States, January, 2005, adapted from Ballenger, Nicole and Blaylock, James, USDA/ERS, April 2003, Consumer-Driven Agriculture: Amber Waves, Vol. 1, Issue