APA (7th ed.) Citation

Century of Progress International Exposition Chicago, Ill. (1934). Official guide book of the fair, 1933: With 1934 supplement. A Century of Progress.

Chicago Style (17th ed.) Citation

Century of Progress International Exposition Chicago, Ill. Official Guide Book of the Fair, 1933: With 1934 Supplement. Chicago: A Century of Progress, 1934.

MLA (8th ed.) Citation

Century of Progress International Exposition Chicago, Ill. Official Guide Book of the Fair, 1933: With 1934 Supplement. A Century of Progress, 1934.