Ralph, J. (1893). Harper's Chicago and the World's fair: The chapters on the exposition being collated from official sources and approved by the Department of Publicity and Promotion of the World's Columbian Exposition. Harper & Brothers.
Chicago-viite (17. p.)Ralph, Julian. Harper's Chicago and the World's Fair: The Chapters on the Exposition Being Collated from Official Sources and Approved by the Department of Publicity and Promotion of the World's Columbian Exposition. New York: Harper & Brothers, 1893.
MLA-viite (8. p.)Ralph, Julian. Harper's Chicago and the World's Fair: The Chapters on the Exposition Being Collated from Official Sources and Approved by the Department of Publicity and Promotion of the World's Columbian Exposition. Harper & Brothers, 1893.