PH2 (AC) Scott M. Allen Washington, D.C....An astronomer poses beside the 26-inch refracting telescope at the U.S. Naval Observatory. The Naval Observatory's two main functions are tracking star movements and keeping precise time. OFFICIAL U.S. NAVY PHOTO (RELEASED)

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-. PH2 (AC) Scott M. Allen Washington, D.C....An astronomer poses beside the 26-inch refracting telescope at the U.S. Naval Observatory. The Naval Observatory's two main functions are tracking star movements and keeping precise time. OFFICIAL U.S. NAVY PHOTO (RELEASED). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6443310. (Accessed June 23, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994-, PH2 (AC) Scott M. Allen Washington, D.C....An astronomer poses beside the 26-inch refracting telescope at the U.S. Naval Observatory. The Naval Observatory's two main functions are tracking star movements and keeping precise time. OFFICIAL U.S. NAVY PHOTO (RELEASED). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6443310
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/6443310>.
Note: These citations are programmatically generated and may be incomplete.