The 16-inch gun turret on the aft section of the battleship USS IOWA (BB 61) during its reactivation at Ingalls Shipbuilding Corp. The circular structure to the left is the base for SKY-4, the aft 5-inch gun director which serves as a backup for the 16-inch main battery gun director

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. The 16-inch gun turret on the aft section of the battleship USS IOWA (BB 61) during its reactivation at Ingalls Shipbuilding Corp. The circular structure to the left is the base for SKY-4, the aft 5-inch gun director which serves as a backup for the 16-inch main battery gun director. 1983-09-23. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6396150. (Accessed September 26, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1983-09-23) The 16-inch gun turret on the aft section of the battleship USS IOWA (BB 61) during its reactivation at Ingalls Shipbuilding Corp. The circular structure to the left is the base for SKY-4, the aft 5-inch gun director which serves as a backup for the 16-inch main battery gun director. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6396150
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/6396150>.
Note: These citations are programmatically generated and may be incomplete.