Ferme, B. E. (20). Introduction to the history of the sources of canon law. Wilson & Lafleur.
芝加哥风格引文Ferme, Brian Edwin. Introduction to the History of the Sources of Canon Law. Montréal: Wilson & Lafleur, 20.
MLA引文Ferme, Brian Edwin. Introduction to the History of the Sources of Canon Law. Wilson & Lafleur, 20.
警告：这些引文格式不一定是100％准确.