1. Alsworth Ross, Edward, ‘A Talk with Trotsky’, The Independent, 09/03/1918. Spanish version in Trotsky, León, Naturaleza y dinámica del capitalismo y la economía de transición, op. cit., p. 232.
2. Bianchi, Alvaro. Gramsci’s Laboratory. Philosophy, History and Politics, Historical Materialism Book Series vol. 204, Brill, Leide/Boston, 2020.
3. Boothman, Dereck, Gramsci, Antonio, Further Selection from the Prison Notebooks, London, The Electric Book Company, 2001.
4. Francioni, Gianni, L’Officina Gramsciana, ipotesi sulla struttura dei ‘Quaderni del carcere’, Napoli, Bibliopolis, 1984.
5. Frosini, Fabio, La religione dell’uomo moderno. Politica e verità nei Quaderni del carcere di Gramsci, Roma, Carocci editore, 2010.