A 1-inch strip of brass inlaid in cement marks the world prime meridian and leads to the entrance of the Royal Observatory antique clock exhibit

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. A 1-inch strip of brass inlaid in cement marks the world prime meridian and leads to the entrance of the Royal Observatory antique clock exhibit. 1986-01-01. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6421625. (Accessed October 23, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1986-01-01) A 1-inch strip of brass inlaid in cement marks the world prime meridian and leads to the entrance of the Royal Observatory antique clock exhibit. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6421625
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/6421625>.
Note: These citations are programmatically generated and may be incomplete.