Kroener, B. R., Müller, R., Umbreit, H., Brownjohn, J., Crampton, P., Osers, E., & Willmot, L. (2000). Organization and mobilization of the German sphere of power: Part I: Wartime administration, economy, and manpower resources 1939 - 1941.

Kroener, Bernhard R., Rolf-Dieter Müller, Hans Umbreit, John Brownjohn, Patricia Crampton, Ewald Osers, and Louise Willmot. Organization and Mobilization of the German Sphere of Power: Part I: Wartime Administration, Economy, and Manpower Resources 1939 - 1941. 2000.

Kroener, Bernhard R., et al. Organization and Mobilization of the German Sphere of Power: Part I: Wartime Administration, Economy, and Manpower Resources 1939 - 1941. 2000.