President Truman attends a Memorial Day ceremony at Arlington National Cemetery and lays a wreath at the Tomb of the Unknown Soldier. This view shows the podium and the seated dignitaries.

Chicago citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985. President Truman attends a Memorial Day ceremony at Arlington National Cemetery and lays a wreath at the Tomb of the Unknown Soldier. This view shows the podium and the seated dignitaries.. 1948-05-30. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/199729. (Accessed September 20, 2018.)
APA citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985, (1948-05-30) President Truman attends a Memorial Day ceremony at Arlington National Cemetery and lays a wreath at the Tomb of the Unknown Soldier. This view shows the podium and the seated dignitaries.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/199729
MLA citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/199729>.
Note: These citations are programmatically generated and may be incomplete.