The Encyclopedia of Warfare
Dennis Showalter
Gallipoli & the Middle East 1914-1918
Edward J. Erickson, Dennis Showalter
The Eastern Front 1914-1920
Michael S. Neiberg, David Jordan, Dennis Showalter
Naval Warfare 1914-1918
Tim Benbow, Dennis Showalter
The Western Front 1914-1916
Michael S. Neiberg, Dennis Showalter
