APA (7th ed.) Citation

(1961). Explanatory supplement to the astronomical ephemeris and the American ephemeris and nautical almanac. Her Majesty's Stationery Office.

Chicago Style (17th ed.) Citation

Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. London: Her Majesty's Stationery Office, 1961.

MLA (9th ed.) Citation

Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac. Her Majesty's Stationery Office, 1961.

Warning: These citations may not always be 100% accurate.