APA(7版)引用形式

Sybel, H. v., & Duff Gordon, L. (1861). The history and literature of the Crusades. Chapman and Hall.

Chicagoスタイル(17版)引用形式

Sybel, Heinrich von, , Lucie Duff Gordon. The History and Literature of the Crusades. London: Chapman and Hall, 1861.

MLA(8版)引用形式

Sybel, Heinrich von, , Lucie Duff Gordon. The History and Literature of the Crusades. Chapman and Hall, 1861.