APA (7th ed.) Citation

Joyce, A. 1. (2009). The World almanac and book of facts 2009 (Primera edición.). World Almanac Education Group.

Chicago Style (17th ed.) Citation

Joyce, Alan 1966. The World Almanac and Book of Facts 2009. Primera edición. Nueva York: World Almanac Education Group, 2009.

MLA (8th ed.) Citation

Joyce, Alan 1966. The World Almanac and Book of Facts 2009. Primera edición. World Almanac Education Group, 2009.