Não informado. (2000). Library conservation news. British Library, National Preservation Office.
Chicagoスタイル(17版)引用形式Não informado. Library Conservation News. London: British Library, National Preservation Office, 2000.
MLA(8版)引用形式Não informado. Library Conservation News. British Library, National Preservation Office, 2000.
警告: この引用は必ずしも正確ではありません.