[New York] O'Brien, John - Unit: 93rd National Guard, Infantry (100 Days, 1864), Company: Field,Staff - Enlistment Rank: Q M, Discharge Rank: Q M

Chicago citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. [New York] O'Brien, John - Unit: 93rd National Guard, Infantry (100 Days, 1864), Company: Field,Staff - Enlistment Rank: Q M, Discharge Rank: Q M. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/33997795. (Accessed August 18, 2018.)
APA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947, [New York] O'Brien, John - Unit: 93rd National Guard, Infantry (100 Days, 1864), Company: Field,Staff - Enlistment Rank: Q M, Discharge Rank: Q M. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/33997795
MLA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/33997795>.
Note: These citations are programmatically generated and may be incomplete.