A student at the US Army Signal Center learns how to operate an SB-3614A telephone switchboard

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. A student at the US Army Signal Center learns how to operate an SB-3614A telephone switchboard. 1989-10-20. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6446653. (Accessed June 25, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (1989-10-20) A student at the US Army Signal Center learns how to operate an SB-3614A telephone switchboard. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6446653
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/6446653>.
Note: These citations are programmatically generated and may be incomplete.