APA (7th ed.) Citation

Duffy, C. (1979). Siege warfare: The fortress in the early modern world, 1484-1660. Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Duffy, Christopher. Siege Warfare: The Fortress in the Early Modern World, 1484-1660. London: Routledge & Kegan Paul, 1979.

MLA (9th ed.) Citation

Duffy, Christopher. Siege Warfare: The Fortress in the Early Modern World, 1484-1660. Routledge & Kegan Paul, 1979.

Warning: These citations may not always be 100% accurate.