1 2 Mencken, H. L. (1979). Raven I. McDavid, Jr., biên tập. The American Language . New York: Alfred A Knopf. tr. 206. ISBN0-394-40075-5. Bảo trì CS1: Văn bản dư (link)
↑ Cronin, Francis D; Beers, Howard W (tháng 1 năm 1937). “Areas of Intense Drought Distress, 1930–1936” (PDF). Research Bulletin. Federal Reserve Archival System for Economic Research (FRASER). tr. 1-23. Truy cập ngày 12 tháng 9 năm 2013.
↑ Murphy, Philip G. (ngày 15 tháng 7 năm 1935). “The Drought of 1934” (PDF). A Report of The Federal Government's Assistance to Agriculture. Federal Reserve Archival System for Economic Research (FRASER). Truy cập ngày 25 tháng 8 năm 2013.
↑ Stock, Catherine McNicol (1992). Main Street in Crisis: The Great Depression and the Old Middle Class on the Northern Plains, p. 24. University of North Carolina Press. ISBN 0-8078-4689-9.
↑ Babb, Sanora, Dorothy Babb, and Douglas Wixson. "On the Dirty Plate Trail". Edited by Douglas Wixson. Autin, Texas: University of Texas Press, 2007, p. 20.
↑ "A Cultural History of the United States – The 1930s". San Diego, California: Lucent Books, Inc., 1999, p.19.
↑ Worster, Donald (1979). Dust Bowl: The Southern Plains in the 1930s. Oxford University Press.
↑ Worster, Donald. "Dust Bowl – The Southern Plains in the 1930s". 25. New York City, New York: Oxford University Press, 2004, p. 50,
↑ Worster, Donald. "Dust Bowl – The Southern Plains in the 1930s". 25. New York City, New York: Oxford University Press, 2004, p. 45,
↑ Worster, Donald. "Dust Bowl – The Southern Plains in the 1930s". 25. New York City, New York: Oxford University Press, 2004, p. 49,
↑ Gregory, N. James. 1991. American Exodus: The Dust Bowl Migration and Okie Culture in California. Oxford University Press.
↑ Babb, Sanora, Dorothy Babb, and Douglas Wixson. "On the Dirty Plate Trail". Edited by Douglas Wixson. Autin, Texas: University of Texas Press, 2007, p. 13,
↑ Steiner, Frederick (2008). The Living Landscape, Second Edition: An Ecological Approach to Landscape Planning, p. 188. Island Press. ISBN 1-59726-396-6.
↑ "benefit payments were continued as measures for production control and income support, but they were now financed by direct Congressional appropriations and justified as soil conservation measures. The Act shifted the parity goal from price equality of agricultural commodities and the articles that farmers buy to income equality of farm and non-farm population."
↑ Rau, Allan. Agricultural Policy and Trade Liberalization in the United States, 1934–1956; a Study of Conflicting Policies. Genève: E. Droz, 1957. p.81.
↑ Heinemann, R. L. (1983). Depression and New Deal in Virginia: The Enduring Dominion. University of Virginia Press. tr. 107. ISBN9780813909462.
↑ Monthly Catalog, United States Public Documents, By United States Superintendent of Documents, United States Government Printing Office, Published by G.P.O., 1938
↑ Federal Writers' Project. Texas. Writers' Program (Tex.): Writers' Program Texas. tr. 16.
↑ Buchanan, James Shannon. Chronicles of Oklahoma. Oklahoma Historical Society. tr. 224.
↑ Francisco J. Arriaga, Greg Andrews. Historical Perspectives on Soil Loss. Departemnt of Soil Science, University of Winconsin-Madison, ngày 16 tháng 1 năm 2012.
↑ "A Cultural History of the United States – The 1930s". San Diego, California: Lucent Books, Inc., 1999, p.45.
