Secretary Gale Norton, left, with Yosemite National Park, California Superintendent Michael Tollefson at press conference during Secretary's visit toYosemite. Visit was designed to promote Yosemite infrastructure improvement project plans and to highlight Earth Day themes

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, left, with Yosemite National Park, California Superintendent Michael Tollefson at press conference during Secretary's visit toYosemite. Visit was designed to promote Yosemite infrastructure improvement project plans and to highlight Earth Day themes. 2004-04-22. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5620519. (Accessed December 16, 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, (2004-04-22) Secretary Gale Norton, left, with Yosemite National Park, California Superintendent Michael Tollefson at press conference during Secretary's visit toYosemite. Visit was designed to promote Yosemite infrastructure improvement project plans and to highlight Earth Day themes. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5620519
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/5620519>.
Note: These citations are programmatically generated and may be incomplete.