APA (7th ed.) Citation

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 (8th ed.) Citation

Keppel, Leopoldina Olivia. The Passing of the Middle Ages. Catholic Truth Society, 1932.