Harkins, C. L. (1988). William of Ockham: (1285 - 1347); commmemorative issue. Franscican Institute.
芝加哥风格引文Harkins, Conrad L. William of Ockham: (1285 - 1347); Commmemorative Issue. St. Bonaventure, NY [u.a.]: Franscican Institute, 1988.
MLA引文Harkins, Conrad L. William of Ockham: (1285 - 1347); Commmemorative Issue. Franscican Institute, 1988.
警告：这些引文格式不一定是100％准确.