Unknown to history :
a story of the captivity of Mary of Scotland /
[Charlotte M. Yonge] ; illustrated by W. Hennessy.

APA Citation

Yonge, C. Mary. (1920). Unknown to history: a story of the captivity of Mary of Scotland. 2. ed. London: Macmillan.

MLA Citation

Yonge, Charlotte Mary, 1823-1901. Unknown to History: a Story of the Captivity of Mary of Scotland. 2. ed. London: Macmillan, 1920.

Warning: These citations may not always be complete (especially for serials).