APA (7th ed.) Citation

Science and Engineering Research Council (Great Britain), Science Research Council (Great Britain), Great Britain. Nautical Almanac Office, & United States Naval Observatory. Nautical Almanac Office. (1980). The astronomical almanac for the year .. U.S. G.P.O. ; H.M.S.O..

Chicago Style (17th ed.) Citation

Science and Engineering Research Council (Great Britain), Science Research Council (Great Britain), Great Britain. Nautical Almanac Office, and United States Naval Observatory. Nautical Almanac Office. The Astronomical Almanac for the Year .. Washington : London: U.S. G.P.O. ; H.M.S.O., 1980.

MLA (8th ed.) Citation

Science and Engineering Research Council (Great Britain), et al. The Astronomical Almanac for the Year .. U.S. G.P.O. ; H.M.S.O., 1980.