World's Columbian Exposition. (1893). Educational exhibit of the World's Columbian Exposition. [s.n.].
Chicago-referens (17:e uppl.)World's Columbian Exposition. Educational Exhibit of the World's Columbian Exposition. Chicago: [s.n.], 1893.
MLA-referens (8:e uppl.)World's Columbian Exposition. Educational Exhibit of the World's Columbian Exposition. [s.n.], 1893.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.