APA (7th ed.) Citation
(1991). The world almanac and of facts (ed.). World almanac.
Chicago Style (17th ed.) Citation
The World Almanac and of Facts. ed. New york: World almanac, 1991.
MLA (9th ed.) Citation
The World Almanac and of Facts. ed. World almanac, 1991.
Warning: These citations may not always be 100% accurate.