Century 21: A United States World Exposition, Seattle, Washington, 1962

Chicago citation style
Unknown. Century 21: A United States World Exposition, Seattle, Washington, 1962. 1962. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3776. (Accessed June 21, 2018.)
APA citation style
Unknown, (1962) Century 21: A United States World Exposition, Seattle, Washington, 1962. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3776
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3776>.
Note: These citations are programmatically generated and may be incomplete.