APA (7th ed.) Zitazioa
United Nations. (1954). THE POPULATION OF CENTRAL AMERICA: INCLUDING MEXICO, 1950-1980.
Chicago Style (17th ed.) Zitazioa
United Nations. THE POPULATION OF CENTRAL AMERICA: INCLUDING MEXICO, 1950-1980. 1954.
MLA (9th ed.) Zitazioa
United Nations. THE POPULATION OF CENTRAL AMERICA: INCLUDING MEXICO, 1950-1980. 1954.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.