United States. World's Columbian Commission. (1891). Classification of the World's Columbian exposition, Chicago, U.S.A., 1893. Donohue and Henneberry.
Chicago-viite (17. p.)United States. World's Columbian Commission. Classification of the World's Columbian Exposition, Chicago, U.S.A., 1893. Chicago: Donohue and Henneberry, 1891.
MLA-viite (8. p.)United States. World's Columbian Commission. Classification of the World's Columbian Exposition, Chicago, U.S.A., 1893. Donohue and Henneberry, 1891.
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