Cita APA (7a ed.)

Purton, P. F. (2018). The medieval military engineer: From the Roman Empire to the sixteenth century. The Boydell Press.

Cita Chicago Style (17a ed.)

Purton, P. F. The Medieval Military Engineer: From the Roman Empire to the Sixteenth Century. Woodbridge, Suffolk, UK: The Boydell Press, 2018.

Cita MLA (8a ed.)

Purton, P. F. The Medieval Military Engineer: From the Roman Empire to the Sixteenth Century. The Boydell Press, 2018.