Cita APA

(2003). The world almanac and book of facts 2003. New York: World Almanac books.

Chicago Style Citation

The World Almanac and Book of Facts 2003. New York: World Almanac books, 2003.

Cita MLA

The World Almanac and Book of Facts 2003. New York: World Almanac books, 2003.

Atenció: Aquestes cites poden no estar 100% correctes.