APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.