Open day :
the British Library, Research and Development Department: 14th Novemember 1990 : a report of the day's proceedings.
APA Citation
British Library. Research and Development Department. (1991). Open day: the British Library, Research and Development Department: 14th Novemember 1990 : a report of the day's proceedings. [London: British Library].
MLA Citation
British Library. Research and Development Department. Open Day: the British Library, Research And Development Department: 14th Novemember 1990 : a Report of the Day's Proceedings. [London: British Library], 1991.
Warning: These citations may not always be complete (especially for serials).