Belfast, Fountain Publishing 1996 viii + 136pp.+ frontispice in colour, signed with dedicace by author, softcover, 21cm., VG
Aldershot, Variorum (Ashgate) 1994 x + 295pp., editor's cloth with gilt lettering, 23cm., Very good condition, ISBN 0-86078-433-9, F78216
Oxford, Oxford University Press 2000 xx + 219pp., 21cm., softcover, in the series "Great medieval thinkers", very good condition, F78218
Milano, Jaca Book 1996 197pp., with dedication by author to the Belgian scholar Gerard Verbeke, 21cm., original softcover, text in Italian, very good, F78219
Oxford, Clarendon Press 1982 xvii + 560pp.+ frontispiece, 22cm., publisher's hardcover in blue cloth, dustwrapper, few small spots on endpapers, else in very good condition, F98504