Não informado. (2000). Library conservation news. British Library, National Preservation Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Library Conservation News. London: British Library, National Preservation Office, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Library Conservation News. British Library, National Preservation Office, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.