World Health Organization. Regional Office for Europe. (1974). Communicable diseases. [s.n.].
Chicagoスタイル(17版)引用形式World Health Organization. Regional Office for Europe. Communicable Diseases. Copenhagen: [s.n.], 1974.
MLA(9版)引用形式World Health Organization. Regional Office for Europe. Communicable Diseases. [s.n.], 1974.
警告: この引用は必ずしも正確ではありません.