World Almanac Education Group. (2005). The World almanac and book of facts 2005 (Primera edición.). World Almanac Education Group.
Čikaški stil citiranja (17. izdanje)World Almanac Education Group. The World Almanac and Book of Facts 2005. Primera edición. Nueva York: World Almanac Education Group, 2005.
MLA način citiranja (8. izdanje)World Almanac Education Group. The World Almanac and Book of Facts 2005. Primera edición. World Almanac Education Group, 2005.
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