Preservation policies-the choices :
proceedings of a seminar at York University 28-29 June 1989.
APA Citation
National Preservation Office. (1990). Preservation policies-the choices: proceedings of a seminar at York University 28-29 June 1989. London: National Preservation Office, British Library.
MLA Citation
National Preservation Office. Preservation Policies-the Choices: Proceedings of a Seminar At York University 28-29 June 1989. London: National Preservation Office, British Library, 1990.
Warning: These citations may not always be complete (especially for serials).