A Soviet-made M-1939 37mm anti-aircraft gun

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. A Soviet-made M-1939 37mm anti-aircraft gun. 1973-12-01. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6386675. (Accessed June 22, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (1973-12-01) A Soviet-made M-1939 37mm anti-aircraft gun. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6386675
MLA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/6386675>.
Note: These citations are programmatically generated and may be incomplete.