Correspondance 6 Tome VI (1860-1861) - Marx, Karl; Engels, Friedrich; Badia, Gilbert; Mortier, Jean; Cambon, Fernand; Fagard, Michel; Guy, Claude; Laveau, Paul; Lefebvre, Jean-Pierre; Leiberich, Michel; Meyer, Alain; Pateau, Serge; et al. (Paris : Editions sociales, 1978)