Circa 1970s

Chicago citation style
Circa 1970s. 1970-1979. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hj94p. (Accessed December 15, 2018.)
APA citation style
(1970-1979) Circa 1970s. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hj94p
MLA citation style
Retrieved from the Digital Public Library of America <https://ark.digitalcommonwealth.org/ark:/50959/k930hj94p>.
Note: These citations are programmatically generated and may be incomplete.