CEMEL, test subject performing different task

Chicago citation style
CEMEL, test subject performing different task. 1977-05-04. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4f16cp20g. (Accessed June 18, 2018.)
APA citation style
(1977-05-04) CEMEL, test subject performing different task. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4f16cp20g
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/4f16cp20g>.
Note: These citations are programmatically generated and may be incomplete.