Pomper, P., & Felshtinsky, Y. (1986). Trotsky's notebooks, 1933-1935: Writings on Lenin, dialectics and evolutionism. New York: Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Pomper, Philip, agus Yuri Felshtinsky. Trotsky's Notebooks, 1933-1935: Writings on Lenin, Dialectics and Evolutionism. New York: Columbia University Press, 1986.
Lua MLA (8ú heag.)Pomper, Philip, agus Yuri Felshtinsky. Trotsky's Notebooks, 1933-1935: Writings on Lenin, Dialectics and Evolutionism. New York: Columbia University Press, 1986.
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