APA (7th ed.) Citation

Powicke, M. (1962). Military obligation in medieval England: A study in liberty and duty. Clarendon Pr.

Chicago Style (17th ed.) Citation

Powicke, Michael. Military Obligation in Medieval England: A Study in Liberty and Duty. Oxford: Clarendon Pr, 1962.

MLA (9th ed.) Citation

Powicke, Michael. Military Obligation in Medieval England: A Study in Liberty and Duty. Clarendon Pr, 1962.

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