Krise der Linken - Krise des Marxismus. PROKLA. Journal of Critical Social Science, Berlin, DE, v. 9, n. 36, p. 35–48, 1979. DOI: 10.32387/prokla.v9i36.1626. Disponível em: https://www.prokla.de/index.php/PROKLA/article/view/1626. Acesso em: 6 dec. 2025.