Purton, P. F. (2018). The medieval military engineer: From the Roman Empire to the sixteenth century. The Boydell Press.
Chicago-Zitierstil (17. Ausg.)Purton, P. F. The Medieval Military Engineer: From the Roman Empire to the Sixteenth Century. Woodbridge, Suffolk, UK: The Boydell Press, 2018.
MLA-Zitierstil (9. Ausg.)Purton, P. F. The Medieval Military Engineer: From the Roman Empire to the Sixteenth Century. The Boydell Press, 2018.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.