Cita APA (7a ed.)

British Library. National Preservation Office. (1990). Keeping our words: The 1989 National Preservation Office Competition. National Preservation Office, The British Library.

Cita Chicago Style (17a ed.)

British Library. National Preservation Office. Keeping Our Words: The 1989 National Preservation Office Competition. London: National Preservation Office, The British Library, 1990.

Cita MLA (9a ed.)

British Library. National Preservation Office. Keeping Our Words: The 1989 National Preservation Office Competition. National Preservation Office, The British Library, 1990.