Press release announcing the inclusion of the Library 21 exhibit at the Seattle World's Fair, August 9, 1961

Chicago citation style
Century 21 Exposition, Inc.. Press release announcing the inclusion of the Library 21 exhibit at the Seattle World's Fair, August 9, 1961. 1961. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/4214. (Accessed July 23, 2018.)
APA citation style
Century 21 Exposition, Inc., (1961) Press release announcing the inclusion of the Library 21 exhibit at the Seattle World's Fair, August 9, 1961. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/4214
MLA citation style
Century 21 Exposition, Inc.. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/4214>.
Note: These citations are programmatically generated and may be incomplete.