David and Manners, Robert, Culture Theory, 1972, Waveland Press, Inc., Prospect Heights, Illinois. Korotayev, Andrey. World Religions and Social Evolution
suspend evictions and foreclosures. The Hill. [2020-03-23]. (原始内容存档于2020-12-21). US-Canada border to close amid virus crisis. BBC. 2020-03-18 [2020-03-23]
"Learning About the Left From Glenn Beck" (页面存档备份,存于互联网档案馆) The American Prospect "Crime Inc.: Redistribution of Wealth" (页面存档备份,存于互联网档案馆), Glenn Beck Program(英语:Glenn