APA aipamena

(2002). The world almanac and book of facts 2002. New York: World Almanac books.

Chicago Style aipamena

The World Almanac and Book of Facts 2002. New York: World Almanac books, 2002.

MLA aipamena

The World Almanac and Book of Facts 2002. New York: World Almanac books, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.