Report : [summary of the information ... concerning the riot situations which occurred within the United States this summer]

Chicago citation style
United States. Federal Bureau of Investigation. Report : [summary of the information ... concerning the riot situations which occurred within the United States this summer]. [1964]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102166423. (Accessed November 16, 2018.)
APA citation style
United States. Federal Bureau of Investigation, ([1964]) Report : [summary of the information ... concerning the riot situations which occurred within the United States this summer]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/102166423
MLA citation style
United States. Federal Bureau of Investigation. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/102166423>.
Note: These citations are programmatically generated and may be incomplete.