Salvadori, M., & Rothschild, J. (1979). Karl Kautsky and the socialist revolution 1880-1938. London: NLB.
Lua i Stíl Chicago (17ú heag.)Salvadori, Massimo, agus Jon Rothschild. Karl Kautsky and the Socialist Revolution 1880-1938. London: NLB, 1979.
Lua MLA (8ú heag.)Salvadori, Massimo, agus Jon Rothschild. Karl Kautsky and the Socialist Revolution 1880-1938. London: NLB, 1979.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.