Não informado. Progress in Standardization. World Health Organization.
Chicagoスタイル(17版)引用形式Não informado. Progress in Standardization. Geneva, Suíça: World Health Organization.
MLA(8版)引用形式Não informado. Progress in Standardization. World Health Organization.
警告: この引用は必ずしも正確ではありません.