Dyfyniad APA

Century of Progress International Exposition Chicago, Ill., & Albert, A. D. (1933). Official view book, a Century of progress exposition. The R. H. Donnelley Corporation.

Dyfyniad Arddull Chicago

Century of Progress International Exposition Chicago, Ill., and Allen Diehl Albert. Official View Book, a Century of Progress Exposition. Chicago: The R. H. Donnelley Corporation, 1933.

Dyfyniad MLA

Century of Progress International Exposition Chicago, Ill., and Allen Diehl Albert. Official View Book, a Century of Progress Exposition. The R. H. Donnelley Corporation, 1933.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.