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.