The American ephemeris and nautical almanac.

APA Citation

United States Naval Observatory. Nautical Almanac Office. The American ephemeris and nautical almanac. Washington: U.S. Govt. Print. Off.; For sale by the Supt. of Docs., U.S. Govt. Print. Off.

MLA Citation

United States Naval Observatory. Nautical Almanac Office. The American Ephemeris And Nautical Almanac. Washington: U.S. Govt. Print. Off.; For sale by the Supt. of Docs., U.S. Govt. Print. Off,

Warning: These citations may not always be complete (especially for serials).