APA aipamena

Country and area. (1980). Sixth Report On The Word. Geneva: World Health Organization.

Chicago Style aipamena

Country and area. Sixth Report On The Word. Geneva: World Health Organization, 1980.

MLA aipamena

Country and area. Sixth Report On The Word. Geneva: World Health Organization, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.