Não informado. (1961). Hospital abstracts. Ministry of Health.
Chicagoスタイル(17版)引用形式Não informado. Hospital Abstracts. London: Ministry of Health, 1961.
MLA(8版)引用形式Não informado. Hospital Abstracts. Ministry of Health, 1961.
警告: この引用は必ずしも正確ではありません.