United States. Naval Observatory. (1948). The American Ephermeris and Nautical Almanac: For the year 1950. Goverment.
Chicago Style (17th ed.) CitationUnited States. Naval Observatory. The American Ephermeris and Nautical Almanac: For the Year 1950. Washington: Goverment, 1948.
MLA (9th ed.) CitationUnited States. Naval Observatory. The American Ephermeris and Nautical Almanac: For the Year 1950. Goverment, 1948.