APA aipamena

World Almanac Books. (2004). The world almanac and book of facts 2004. New York: World Almanac Books.

Chicago Style aipamena

World Almanac Books. The World Almanac and Book of Facts 2004. New York: World Almanac Books, 2004.

MLA aipamena

World Almanac Books. The World Almanac and Book of Facts 2004. New York: World Almanac Books, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.