Londres: George Allen & Unwin, 1981.
Etiqueta: Segunda Internacional
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París: Librairie du Parti Socialiste (S.F.I.O.), 1908.
Milorad Drachkovitch, ed. The Revolutionary Internationals, 1864-1943.
Stanford: Stanford University Press, 1966.
Eric Hass. The Socialist Labor Party and the Internationals.
Nueva York: New York Labor News Company, 1949.
Karl Kautsky. Parlamentarismo y democracia.
Madrid: Editora Nacional, 1982.
Janet Polasky. The Democratic Socialism of Emile Vandervelde.
Oxford/Washington: Berg, 1995.
Manfred Steger. The Quest for Evolutionary Socialism. Eduard Bernstein and Social Democracy.
Cambridge: Cambridge University Press, 1997.
Eduard Bernstein. The Preconditions of Socialism.
Cambridge/Nueva York: Cambridge University Press, 1993.
Carlos Kautsky. La doctrina socialista.
Madrid: Francisco Beltrán, 1910.