BG-18

Chicago citation style
BG-18. 1982. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/df65vz75s. (Accessed July 20, 2018.)
APA citation style
(1982) BG-18. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/df65vz75s
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/df65vz75s>.
Note: These citations are programmatically generated and may be incomplete.