Não informado. (2001). Bulletin of the World Health Organization. World Health Organization.
Chicagoスタイル(17版)引用形式Não informado. Bulletin of the World Health Organization. Geneva, Suíça: World Health Organization, 2001.
MLA(8版)引用形式Não informado. Bulletin of the World Health Organization. World Health Organization, 2001.
警告: この引用は必ずしも正確ではありません.