Logan, F. D. (1968). Excommunication and the secular arm in medieval England: A study in legal procedure from the thirteenth to the sixteenth century. Pontifical Institute of Mediaeval Studies.
Lua i Stíl Chicago (17ú heag.)Logan, F. Donald. Excommunication and the Secular Arm in Medieval England: A Study in Legal Procedure from the Thirteenth to the Sixteenth Century. Toronto: Pontifical Institute of Mediaeval Studies, 1968.
Lua MLA (8ú heag.)Logan, F. Donald. Excommunication and the Secular Arm in Medieval England: A Study in Legal Procedure from the Thirteenth to the Sixteenth Century. Pontifical Institute of Mediaeval Studies, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.