APA (7th ed.) Citation

Century of Progress International Exposition. (1934). 1934, Century of Progress. Western Newspaper Union.

Chicago Style (17th ed.) Citation

Century of Progress International Exposition. 1934, Century of Progress. [Chicago, Ill.]: Western Newspaper Union, 1934.

MLA (8th ed.) Citation

Century of Progress International Exposition. 1934, Century of Progress. Western Newspaper Union, 1934.