British Library. National Preservation Office. (1998). NPO journal. National Preservation Office, The British Library.
Chicago Style (17th ed.) CitationBritish Library. National Preservation Office. NPO Journal. London: National Preservation Office, The British Library, 1998.
MLA (9th ed.) CitationBritish Library. National Preservation Office. NPO Journal. National Preservation Office, The British Library, 1998.
Warning: These citations may not always be 100% accurate.