(1992). Guide to libraries and information units: In government departments and other organizations (30th ed.). The British Library Science Reference and Information Service.
Cita Chicago (17th ed.)Guide to Libraries and Information Units: In Government Departments and Other Organizations. 30th ed. London: The British Library Science Reference and Information Service, 1992.
Cita MLA (9th ed.)Guide to Libraries and Information Units: In Government Departments and Other Organizations. 30th ed. The British Library Science Reference and Information Service, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.