Franks, Norman; Guest, Russell F. & Alegi, Gregory (1997). Above the War Fronts: The British Two-seater Bomber Pilot and Observer Aces, the British Two-seater Fighter Observer Aces, and the Belgian, Italian, Austro-Hungarian and Russian Fighter Aces, 1914–1918. London, UK: Grub Street. ISBN978-1-898697-56-5.