Kaufmann, J. E., & Kaufmann, H. W. (2019). Castle to fortress: Medieval to post-modern fortifications in the lands of the former Roman empire. Pen & Sword Military.
Chicago Style (17th ed.) CitationKaufmann, J. E., and H. W. Kaufmann. Castle to Fortress: Medieval to Post-modern Fortifications in the Lands of the Former Roman Empire. Barnsley, South Yorkshire, UK: Pen & Sword Military, 2019.
MLA (9th ed.) CitationKaufmann, J. E., and H. W. Kaufmann. Castle to Fortress: Medieval to Post-modern Fortifications in the Lands of the Former Roman Empire. Pen & Sword Military, 2019.
Warning: These citations may not always be 100% accurate.