The No. 1 and No. 2 Mark 7 16-inch/50 caliber gun turrets are trained to starboard during gunnery exercises aboard the battleship USS IOWA (BB 61)

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. The No. 1 and No. 2 Mark 7 16-inch/50 caliber gun turrets are trained to starboard during gunnery exercises aboard the battleship USS IOWA (BB 61). 1985-08-01. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6416873. (Accessed June 20, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (1985-08-01) The No. 1 and No. 2 Mark 7 16-inch/50 caliber gun turrets are trained to starboard during gunnery exercises aboard the battleship USS IOWA (BB 61). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6416873
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/6416873>.
Note: These citations are programmatically generated and may be incomplete.