APA

United States Naval Observatory. Nautical Almanac Office, Great Britain. Nautical Almanac Office, .The nautical almanac. Washington : London: [Dept. of Defense], Naval Observatory, Nautical Almanac Office; for sale by the Supt. of Docs., U.S. Govt. Print. Off. ; Secretary of State for Defence, [Royal Greenwich Observatory], Nautical Almanac Office; for sale by Her Majesty's Stationery Office.

Chicago

United States Naval Observatory. Nautical Almanac Office, Great Britain. Nautical Almanac Office, .The nautical almanac. Washington : London: [Dept. of Defense], Naval Observatory, Nautical Almanac Office; for sale by the Supt. of Docs., U.S. Govt. Print. Off. ; Secretary of State for Defence, [Royal Greenwich Observatory], Nautical Almanac Office; for sale by Her Majesty's Stationery Office.

Harvard

United States Naval Observatory. Nautical Almanac Office, Great Britain. Nautical Almanac Office, .The nautical almanac. Washington : London: [Dept. of Defense], Naval Observatory, Nautical Almanac Office; for sale by the Supt. of Docs., U.S. Govt. Print. Off. ; Secretary of State for Defence, [Royal Greenwich Observatory], Nautical Almanac Office; for sale by Her Majesty's Stationery Office.

MLA

United States Naval Observatory. Nautical Almanac Office, Great Britain. Nautical Almanac Office, .Washington : London: [Dept. of Defense], Naval Observatory, Nautical Almanac Office; for sale by the Supt. of Docs., U.S. Govt. Print. Off. ; Secretary of State for Defence, [Royal Greenwich Observatory], Nautical Almanac Office; for sale by Her Majesty's Stationery Office. .