Trotsky and His Critics.
Revolutionary History, Vol. 11, N° 1.
Londres: Merlin Press, 2013.
Trotsky and His Critics Boris Souvarine, Letter to Leon Trotsky
Trotsky and the German Communist Opposition
Jay Lovestone, Soviet Foreign Policy and World Revolution
Christian Stalinism and Trotskyism
Senex (Mark Schmidt), Revolutionary Tactics In Spain
Trotsky and Spain: The POUM’s Assessment