1970s

Chicago citation style
1970s. 1972-04. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hk068. (Accessed December 13, 2018.)
APA citation style
(1972-04) 1970s. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hk068
MLA citation style
Retrieved from the Digital Public Library of America <https://ark.digitalcommonwealth.org/ark:/50959/k930hk068>.
Note: These citations are programmatically generated and may be incomplete.