APA (7th ed.) Citation

ALMANAC. (1991). Almanac for computers 1991. Nautical Almanac Office.

Chicago Style (17th ed.) Citation

ALMANAC. Almanac for Computers 1991. Washington: Nautical Almanac Office, 1991.

MLA (9th ed.) Citation

ALMANAC. Almanac for Computers 1991. Nautical Almanac Office, 1991.

Warning: These citations may not always be 100% accurate.