Spain in the fifteenth century, 1369-1516: essays and extracts by historians of Spain J. R. L. Highfield and Frances M. López Morillas 1972
The entry of the Slavs into Christendom: an introduction to the medieval history of the Slavs A. P. Vlasto 1970
Before France and Germany: the creation and transformation of the Merovingian world Patrick J. Geary 1988