Butterfield, C. W. (1972). History of George Rogers Clark's conquest of the Illinois and the Wabash towns, 1778 and 1779. Gregg Press.
Chicago-referens (17:e uppl.)Butterfield, Consul Willshire. History of George Rogers Clark's Conquest of the Illinois and the Wabash Towns, 1778 and 1779. Boston: Gregg Press, 1972.
MLA-referens (8:e uppl.)Butterfield, Consul Willshire. History of George Rogers Clark's Conquest of the Illinois and the Wabash Towns, 1778 and 1779. Gregg Press, 1972.
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