World Almanac Books. (2002). The world almanac and book of facts. World Almanac Education Group.
Cita Chicago Style (17a ed.)World Almanac Books. The World Almanac and Book of Facts. New York: World Almanac Education Group, 2002.
Cita MLA (9a ed.)World Almanac Books. The World Almanac and Book of Facts. World Almanac Education Group, 2002.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.