Cita APA (7a ed.)

British Library. National Preservation Office. (1998). NPO journal. National Preservation Office, The British Library.

Cita Chicago Style (17a ed.)

British Library. National Preservation Office. NPO Journal. London: National Preservation Office, The British Library, 1998.

Cita MLA (9a ed.)

British Library. National Preservation Office. NPO Journal. National Preservation Office, The British Library, 1998.