Athearn, R. G. (1963). The american heritage new illustrated history of the united states: A world power. Dell Publishing Company.
Chicago-referens (17:e uppl.)Athearn, Robert G. The American Heritage New Illustrated History of the United States: A World Power. New York: Dell Publishing Company, 1963.
MLA-referens (9:e uppl.)Athearn, Robert G. The American Heritage New Illustrated History of the United States: A World Power. Dell Publishing Company, 1963.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.