Outbreak of the world war : German documents : in one volume / collected by Karl Kautsky and edited by Max Montgelas and Walter Schücking. - Kautsky, Karl (1854-1938); Montgelas, Max von (1860-1938); Schücking, Walther (1875-1935) (Publications of the Carnegie Endowment for International Peace, Division of International Law, 1924)