ALMANAC. (1991). Almanac for computers 1991. Nautical Almanac Office.
Chicagoスタイル(17版)引用形式ALMANAC. Almanac for Computers 1991. Washington: Nautical Almanac Office, 1991.
MLA(9版)引用形式ALMANAC. Almanac for Computers 1991. Nautical Almanac Office, 1991.
警告: この引用は必ずしも正確ではありません.