United States Naval Observatory. Nautical Almanac Office & Great Britain. Nautical Almanac Office. (2002). The astronomical almanac for the year 2004 and its companion The Astronomical Almanac Online: Data for astronomy, space sciences, geodesy, surveying, navigation and other applications. U.S. G.P.O.
Style de citation Chicago (17e éd.)United States Naval Observatory. Nautical Almanac Office et Great Britain. Nautical Almanac Office. The Astronomical Almanac for the Year 2004 and Its Companion The Astronomical Almanac Online: Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications. Washington, D.C: U.S. G.P.O, 2002.
Style de citation MLA (9e éd.)United States Naval Observatory. Nautical Almanac Office et Great Britain. Nautical Almanac Office. The Astronomical Almanac for the Year 2004 and Its Companion The Astronomical Almanac Online: Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications. U.S. G.P.O, 2002.