APA (7th ed.) Citation

LeBon & Hanna. (1999). Psychology of the Great War: The first world war & its origins. Transaction Publishers.

Chicago Style (17th ed.) Citation

LeBon and Hanna. Psychology of the Great War: The First World War & Its Origins. New Brunswick: Transaction Publishers, 1999.

MLA (8th ed.) Citation

LeBon and Hanna. Psychology of the Great War: The First World War & Its Origins. Transaction Publishers, 1999.