APA (7th ed.) Zitazioa

(2004). World population policies 2003. economic & social affairs.

Chicago Style (17th ed.) Zitazioa

World Population Policies 2003. new york: economic & social affairs, 2004.

MLA (9th ed.) Zitazioa

World Population Policies 2003. economic & social affairs, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.