Sarah Janssen. (2008). The WORLD almanac and book of facts 2008. World Almanac Books.
Cita Chicago Style (17a ed.)Sarah Janssen. The WORLD Almanac and Book of Facts 2008. World Almanac Books, 2008.
Cita MLA (9a ed.)Sarah Janssen. The WORLD Almanac and Book of Facts 2008. World Almanac Books, 2008.
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