APA
,, . (2009). The World almanac and book of facts 2010. New York: The World Almanac Books.
Chicago
,, . 2009. The World almanac and book of facts 2010. New York: The World Almanac Books.
Harvard
,, . (2009). The World almanac and book of facts 2010. New York: The World Almanac Books.
MLA
,, . The World almanac and book of facts 2010. New York: The World Almanac Books. 2009.