Hayward 2004. Hayward, Steven F. (2004). 《The Real Jimmy Carter: How Our Worst Ex-president Undermines American Foreign Policy, Coddles Dictators, and Created the Party of Clinton and Kerry》. Regnery Publishing. ISBN978-1-59698-278-9. OCLC836407503. Earl may not have voted for FRD again, but he was not above receiving several New Deal agricultural subsidies as the Depression wore on.
Nijnatten 2012. Nijnatten, Frans van (2012). 《Tussen liberalisme en conservatisme: de verkiezingscampagnes van Jimmy Carter (1962–1980)》 [Between Liberalism and Conservatism: Jimmy Carter's Election Campaigns (1962–1980)] (네덜란드어). Vossiuspers UvA. ISBN978-90-5629-698-8. OCLC775137957.