World Almanac Books. (2002). The world almanac and book of facts. World Almanac Education Group.
Style de citation Chicago (17e éd.)World Almanac Books. The World Almanac and Book of Facts. New York: World Almanac Education Group, 2002.
Style de citation MLA (9e éd.)World Almanac Books. The World Almanac and Book of Facts. World Almanac Education Group, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.