Country and area. (1980). Sixth Report On The Word. Geneva: World Health Organization.
シカゴスタイル引用形Country and area. Sixth Report On The Word. Geneva: World Health Organization, 1980.
MLA引用形式Country and area. Sixth Report On The Word. Geneva: World Health Organization, 1980.
警告: この引用は必ずしも正確ではありません.