William E. S. Flory, Prisoners of War: A Study in the Development of International Law. Washington, D. C.: American Council on Public Affairs, 1942.
A good survey of all legal aspects of the subject, with a selected bibliography.
Georges Werner, “Les Prisonniers de Guerre,” in Académie de Droit International: Receuil des Cours, 1928, Vol. I, Paris: Librairie Hachette, 1929, pp. 1-107.
Scholarly juridical treatise on all legal problems concerning prisoners of war.
Franz von Liszt, Das Völkerrecht. Twelfth edition by Max Fleischmann. Berlin: Julius Springer, 1925, pp. 480-488.
The standard German work on International Law, with a selected bibliography.
André Warnod, Prisonnier de Guerre: Notes et Croquis Rapportés d’Allemagne. Paris: Librairie Charpentier et Fasquelle, 1915.
Experiences in a German internment camp, with interesting drawings by the author as illustrations.
[Alexander] Backhaus, Die Kriegsgefangenen in Deutschland. Siegen-Leipzig-Berlin: Verlag Hermann Montanus, 1915.
About 250 photographs from German prison camps with explanatory comments.