The left side of an M-16A2 rifle showing the elevation knob

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. The left side of an M-16A2 rifle showing the elevation knob. 1986-03-18. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6403392. (Accessed July 16, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (1986-03-18) The left side of an M-16A2 rifle showing the elevation knob. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6403392
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/6403392>.
Note: These citations are programmatically generated and may be incomplete.