Barker, J. E. (1912). Modern Germany: Her political and economic problems, her foreign and domestic policy, her ambitions, and the causes of her successes and of her failures (4th and very greatly enlarged ed., completely rev. and brought up to January 1912, by J. Ellis Barker.). E. P. Dutton.

Barker, J. Ellis. Modern Germany: Her Political and Economic Problems, Her Foreign and Domestic Policy, Her Ambitions, and the Causes of Her Successes and of Her Failures. 4th and very greatly enlarged ed., completely rev. and brought up to January 1912, by J. Ellis Barker. New York: E. P. Dutton, 1912.

Barker, J. Ellis. Modern Germany: Her Political and Economic Problems, Her Foreign and Domestic Policy, Her Ambitions, and the Causes of Her Successes and of Her Failures. 4th and very greatly enlarged ed., completely rev. and brought up to January 1912, by J. Ellis Barker. E. P. Dutton, 1912.