Shub, D., Cahan, A., Portugeis, S., Ellenbogen, W., Kautsky, K., Yourievsky, I., & Shaplen, J. (1934). Socialism, fascism, communism. New York: American League for Democratic Socialism.

Shub, David., Abraham Cahan, S. Portugeis, Wilhelm Ellenbogen, Karl Kautsky, I. Yourievsky, and Joseph Shaplen. Socialism, Fascism, Communism. New York: American League for Democratic Socialism, 1934.

Shub, David., et al. Socialism, Fascism, Communism. New York: American League for Democratic Socialism, 1934.