- Listenly
- Public Library
- Project Gutenberg
- Germany. Heer — History -- World War, 1914-1918
Germany. Heer — History -- World War, 1914-1918 — Audiobooks
Histories of two hundred and fifty-one divisions of the German army which participated in the war (1914-1918)
by United States. War Department. General Staff
Ein Volk in Waffen
by Sven Anders Hedin