Cita APA (7a ed.)

(1961). Explanatory Supplement to the Astronomical Ephemeris and The Amercian Ephemeris and Nautical Almanac. Her Majesty's Stationery Office.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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