Gw mau tau Finance-Capital and Crises (1911) dari Karl Johann Kautsky

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"Preface" to The Twelve Who Are to Die: The Trial of the Socialists-Revolutionists in Moscow. Berlin: Delegation of the Party of Socialists-Revolutionists, 1922.

Foundations of Christianity: A Study of Christian Origins. New York: International Publishers, 1925.

The Labour Revolution. H. J. Stenning, trans. London: National Labour Press, 1925.

Are the Jews a Race? New York: International Publishers, 1926.

Communism vs. Socialism. Joseph Shaplen, trans. New York: American League for Democratic Socialism, 1932.