APA (7th ed.) Citation

Ker, W. P. (1911). The dark ages. C. Scribner's sons.

Chicago Style (17th ed.) Citation

Ker, W. P. The Dark Ages. New York: C. Scribner's sons, 1911.

MLA (9th ed.) Citation

Ker, W. P. The Dark Ages. C. Scribner's sons, 1911.