Keppel, L. O. (1932). The passing of the Middle Ages. Catholic Truth Society.
Chicago Style (17th ed.) CitationKeppel, Leopoldina Olivia. The Passing of the Middle Ages. London: Catholic Truth Society, 1932.
MLA引文Keppel, Leopoldina Olivia. The Passing of the Middle Ages. Catholic Truth Society, 1932.
警告:这些引文格式不一定是100%准确.