Coba jelasin Delegasi penting dari Kongres Sosialis Internasional Stuttgart 1907 dong

Daniel DeLeon, [https://archive.org/details/reporttosocialis00socirich Report to the Socialist Labor Party of the United States of America to the International Congress Held in Stuttgart, August 18-25, 1907,"] New York: National Executive Committee of the Socialist Labor Party, 1907.

J. C. Kennedy, "The Stuttgart Congress," Journal of Political Economy, vol. 15, no. 8 (Oct. 1907), pp. 489–491. In JSTOR

International Socialist Bureau, Anträge und Beschlussentwürfe nebst Begründungen an den Internationalen Sozialistischen Kongress zu Stuttgart (Proposals and Draft Resolutions with Explanatory Reports to the International Socialist Congress at Stuttgart). Brussels, D. Brismée, 1907.

International Socialist Bureau, Internationaler Sozialisten-Kongress zu Stuttgart, 18. bis 24. August 1907. Berlin: Buchhandlung Vorwärts, 1907.

Harry Quelch, "The Socialist International and the British Trade Unions," Social Democrat, vol. 11, no. 9 (15 Sept. 1907), pp. 521–528.