Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.