Verbruggen, J F. (1997). The art of warfare in Western Europe during the Middle Ages: From the eighth century to 1340(2nd ed., rev. and enl.). Woodbridge, Suffolk, UK: Boydell Press.

The art of warfare in Western Europe during the Middle Ages : From the eighth century to 1340 / J.F. Verbruggen . — 2nd ed., rev. and enl.. — Woodbridge, Suffolk, UK : Boydell Press, 1997. — x, 388 p., [12] p. of plates; ill; 25 cm. — (Warfare in history ; 1358-779X) (EBSCOhost eBook Collection). — ISBN 0585165122, 9780585165127