APA引文

Keppel, L. O. (1932). The passing of the Middle Ages. Catholic Truth Society.

Chicago Style (17th ed.) Citation

Keppel, 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.