Não informado. (1978). World Health Statistics Quarterly. World Health Organization.
Chicagoスタイル(17版)引用形式Não informado. World Health Statistics Quarterly. Geneva, Suíça: World Health Organization, 1978.
MLA(8版)引用形式Não informado. World Health Statistics Quarterly. World Health Organization, 1978.
警告: この引用は必ずしも正確ではありません.