Great Britain. Nautical Almanac Office, United States Naval Observatory. Nautical Almanac Office, & United States Naval Observatory. Nautical Almanac Office. (1974). Explanatory supplement to the astronomical ephemeris and the American ephemeris and nautical almanac (3d impression with amendments.). Her Majesty's Stationery Office.
Citación estilo ChicagoGreat Britain. Nautical Almanac Office, United States Naval Observatory. Nautical Almanac Office, and United States Naval Observatory. Nautical Almanac Office. Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. 3d impression with amendments. London: Her Majesty's Stationery Office, 1974.
Cita MLAGreat Britain. Nautical Almanac Office, et al. Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. 3d impression with amendments. Her Majesty's Stationery Office, 1974.