Century 21 Countdown, Vol. 1 (1), Summer, 1959

Chicago citation style
Unknown. Century 21 Countdown, Vol. 1 (1), Summer, 1959. 1959. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3851. (Accessed July 21, 2018.)
APA citation style
Unknown, (1959) Century 21 Countdown, Vol. 1 (1), Summer, 1959. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3851
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3851>.
Note: These citations are programmatically generated and may be incomplete.