APA (7th ed.) Zitazioa
(1987). Demographic yearbook: Thirty- ninth issue (ed.). United nations publication.
Chicago Style (17th ed.) Zitazioa
Demographic Yearbook: Thirty- Ninth Issue. ed. New york: United nations publication, 1987.
MLA (9th ed.) Zitazioa
Demographic Yearbook: Thirty- Ninth Issue. ed. United nations publication, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.