Keppel, L. O. (1930). An era of martyrs. Catholic Truth Society.
Chicago Style (17th ed.) CitationKeppel, Leopoldina Olivia. An Era of Martyrs. London: Catholic Truth Society, 1930.
MLA引文Keppel, Leopoldina Olivia. An Era of Martyrs. Catholic Truth Society, 1930.
警告:這些引文格式不一定是100%准確.