File: science class

Chicago citation style
File: science class. 1972-04. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hk66q. (Accessed December 16, 2018.)
APA citation style
(1972-04) File: science class. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/k930hk66q
MLA citation style
Retrieved from the Digital Public Library of America <https://ark.digitalcommonwealth.org/ark:/50959/k930hk66q>.
Note: These citations are programmatically generated and may be incomplete.