The Duke and Duchess from Kent are welcomed upon their arrival for a visit to the United States

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. The Duke and Duchess from Kent are welcomed upon their arrival for a visit to the United States. 1981-09-21. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6362052. (Accessed November 14, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1981-09-21) The Duke and Duchess from Kent are welcomed upon their arrival for a visit to the United States. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6362052
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/6362052>.
Note: These citations are programmatically generated and may be incomplete.