APA (7th ed.) Citation

Fields, N., & Ó'Brógáin, S. (2011). Early Roman warrior, 753-321 BC. Osprey.

Chicago Style (17th ed.) Citation

Fields, Nic, and Seán Ó'Brógáin. Early Roman Warrior, 753-321 BC. Oxford: Osprey, 2011.

MLA (9th ed.) Citation

Fields, Nic, and Seán Ó'Brógáin. Early Roman Warrior, 753-321 BC. Osprey, 2011.