APA (7th ed.) Citation

Sweetman, P. D. (2000). Medieval castles of Ireland (New ed.). Boydell Press.

Chicago Style (17th ed.) Citation

Sweetman, P. David. Medieval Castles of Ireland. New ed. Rochester, NY: Boydell Press, 2000.

MLA (9th ed.) Citation

Sweetman, P. David. Medieval Castles of Ireland. New ed. Boydell Press, 2000.