APA(7版)引用形式

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

Chicagoスタイル(17版)引用形式

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

MLA(8版)引用形式

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