APA način citiranja (7. izdanje)

Keppel, L. O. (1930). An era of martyrs. Catholic Truth Society.

Čikaški stil citiranja (17. izdanje)

Keppel, Leopoldina Olivia. An Era of Martyrs. London: Catholic Truth Society, 1930.

MLA način citiranja (8. izdanje)

Keppel, Leopoldina Olivia. An Era of Martyrs. Catholic Truth Society, 1930.