APA (7th ed.) Citation

Henty, G. A. (1880). The boy knight: A tale of the crusade. Federal Book Co..

Chicago Style (17th ed.) Citation

Henty, G. A. The Boy Knight: A Tale of the Crusade. New York: Federal Book Co., 1880.

MLA (9th ed.) Citation

Henty, G. A. The Boy Knight: A Tale of the Crusade. Federal Book Co., 1880.