APA (7th ed.) Citation

Lamb, H. (1930). The crusades. Doubleday.

Chicago Style (17th ed.) Citation

Lamb, Harold. The Crusades. Garden City, N.Y: Doubleday, 1930.

MLA (9th ed.) Citation

Lamb, Harold. The Crusades. Doubleday, 1930.

Warning: These citations may not always be 100% accurate.