STD: MX-991/u

Chicago citation style
STD: MX-991/u. 1990-11-29. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x920gt403. (Accessed June 19, 2018.)
APA citation style
(1990-11-29) STD: MX-991/u. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/x920gt403
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/x920gt403>.
Note: These citations are programmatically generated and may be incomplete.