APA (7th ed.) Citation

(1999). The world almanac and book of facts 2000. World Almanac Books.

Chicago Style (17th ed.) Citation

The World Almanac and Book of Facts 2000. Mahwah, New Jersey: World Almanac Books, 1999.

MLA (9th ed.) Citation

The World Almanac and Book of Facts 2000. World Almanac Books, 1999.

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