A cannon salute honors the arrival of the Unknown Serviceman of the Vietnam Era. The Unknown will be taken to the Capitol, where he will lie in state until Memorial Day, followed by a state funeral and interment at the Tomb of the Unknowns at Arlington Memorial Cemetery

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. A cannon salute honors the arrival of the Unknown Serviceman of the Vietnam Era. The Unknown will be taken to the Capitol, where he will lie in state until Memorial Day, followed by a state funeral and interment at the Tomb of the Unknowns at Arlington Memorial Cemetery. 1984-05-25. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6387453. (Accessed October 16, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1984-05-25) A cannon salute honors the arrival of the Unknown Serviceman of the Vietnam Era. The Unknown will be taken to the Capitol, where he will lie in state until Memorial Day, followed by a state funeral and interment at the Tomb of the Unknowns at Arlington Memorial Cemetery. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6387453
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/6387453>.
Note: These citations are programmatically generated and may be incomplete.