Citação norma APA

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

Citação norma Chicago

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

Citação norma MLA

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

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.