Secretary Gale Norton, right, with Ethel Kennedy, Earth Conservation Corps supporter and widow of Robert Kennedy, at the Washington, D.C. groundbreaking event for the Anacostia Riverwalk Trail, a public-private partnership project involving D.C. government, National Park Service, environmental groups

Chicago citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000. Secretary Gale Norton, right, with Ethel Kennedy, Earth Conservation Corps supporter and widow of Robert Kennedy, at the Washington, D.C. groundbreaking event for the Anacostia Riverwalk Trail, a public-private partnership project involving D.C. government, National Park Service, environmental groups. 2003-06-12. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5613916. (Accessed October 15, 2018.)
APA citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000, (2003-06-12) Secretary Gale Norton, right, with Ethel Kennedy, Earth Conservation Corps supporter and widow of Robert Kennedy, at the Washington, D.C. groundbreaking event for the Anacostia Riverwalk Trail, a public-private partnership project involving D.C. government, National Park Service, environmental groups. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5613916
MLA citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/5613916>.
Note: These citations are programmatically generated and may be incomplete.