Secretary of Defense Melvin R. Laird, left, congratulates GEN. John D. Ryan, chief of staff, U.S. Air Force, after presenting him with the Distinguished Service Medal (Air Force) during a Pentagon ceremony. Ryan has served in his position since August 1, 1969

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. Secretary of Defense Melvin R. Laird, left, congratulates GEN. John D. Ryan, chief of staff, U.S. Air Force, after presenting him with the Distinguished Service Medal (Air Force) during a Pentagon ceremony. Ryan has served in his position since August 1, 1969. 1973-01-15. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6399321. (Accessed June 24, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (1973-01-15) Secretary of Defense Melvin R. Laird, left, congratulates GEN. John D. Ryan, chief of staff, U.S. Air Force, after presenting him with the Distinguished Service Medal (Air Force) during a Pentagon ceremony. Ryan has served in his position since August 1, 1969. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6399321
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/6399321>.
Note: These citations are programmatically generated and may be incomplete.