APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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