APA (7th ed.) Citation

Simkins, Jukes, Strachan, & Hickey. (2013). The First World War: The war to end all wars (New ed.). Osprey Publishing.

Chicago Style (17th ed.) Citation

Simkins, Jukes, Strachan, and Hickey. The First World War: The War to End All Wars. New ed. Oxford, UK: Osprey Publishing, 2013.

MLA (8th ed.) Citation

Simkins, et al. The First World War: The War to End All Wars. New ed. Osprey Publishing, 2013.