Acting as Deputy Assistant Secretary of the Air Force for Environmental Safety and Occupational Health, Terry Yonkers (left) heads up a team of US Air Force volunteers from the Pentagon in support of Earth Day April 21, 2001. Yonkers and his team joined local citizens at the 4 Mile Run Park in Alexandria, Virginia, to gather a mountain of refuse

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. Acting as Deputy Assistant Secretary of the Air Force for Environmental Safety and Occupational Health, Terry Yonkers (left) heads up a team of US Air Force volunteers from the Pentagon in support of Earth Day April 21, 2001. Yonkers and his team joined local citizens at the 4 Mile Run Park in Alexandria, Virginia, to gather a mountain of refuse. 2001-04-21. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6521876. (Accessed July 15, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, (2001-04-21) Acting as Deputy Assistant Secretary of the Air Force for Environmental Safety and Occupational Health, Terry Yonkers (left) heads up a team of US Air Force volunteers from the Pentagon in support of Earth Day April 21, 2001. Yonkers and his team joined local citizens at the 4 Mile Run Park in Alexandria, Virginia, to gather a mountain of refuse. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6521876
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/6521876>.
Note: These citations are programmatically generated and may be incomplete.