(1956). The nautical almanac and astronomical ephemeris for the year 1958: For the meridian of the Royal Observatory at Greenwich. London: Her Majesty's Stationery Office.
Παραπομπή Chicago StyleThe Nautical Almanac and Astronomical Ephemeris for the Year 1958: For the Meridian of the Royal Observatory At Greenwich. London: Her Majesty's Stationery Office, 1956.
Παραπομπή MLAThe Nautical Almanac and Astronomical Ephemeris for the Year 1958: For the Meridian of the Royal Observatory At Greenwich. London: Her Majesty's Stationery Office, 1956.
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