Hartmen, R. S. (1979). Satellite navigation in the U.S. coast guard. Naval Postgraduate School.
Lua i Stíl Chicago (17ú heag.)Hartmen, Richard Sheridan. Satellite Navigation in the U.S. Coast Guard. Monterey, Calif.: Naval Postgraduate School, 1979.
Lua MLA (9ú heag.)Hartmen, Richard Sheridan. Satellite Navigation in the U.S. Coast Guard. Naval Postgraduate School, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.