Medieval libraries of Great Britain :
a list of surviving books ... supplement to the second edition /
edited by Andrew G. Watson.
APA Citation
Ker, N. R. (Neil Ripley)., Watson, A. G. (1987). Medieval libraries of Great Britain: a list of surviving books ... supplement to the second edition. London: Offices of the Royal Historical Society.
MLA Citation
Ker, N. R. (Neil Ripley), and Andrew G Watson. Medieval Libraries of Great Britain: a List of Surviving Books ... Supplement to the Second Edition. London: Offices of the Royal Historical Society, 1987.
Warning: These citations may not always be complete (especially for serials).