APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (8. izdanje)

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