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(en) LaPorte et Morgan, « Kings among their subjects'? Ernst Thälmann, Harry Pollitt and the leadership cult as Stalinization », Bolshevism, Stalinism and the Comintern: Perspectives on Stalinization, 1917–53, Palgrave Macmillan, (ISBN978-1-349-28252-4, DOI10.1057/9780230227583_7, S2CID147878826, lire en ligne [archive du ] [PDF], consulté le )
(en) LaPorte et Morgan, « Kings among their subjects'? Ernst Thälmann, Harry Pollitt and the leadership cult as Stalinization », Bolshevism, Stalinism and the Comintern: Perspectives on Stalinization, 1917–53, Palgrave Macmillan, (ISBN978-1-349-28252-4, DOI10.1057/9780230227583_7, S2CID147878826, lire en ligne [archive du ] [PDF], consulté le )
(en) Durham, « British Revolutionaries and the Suppression of the Left in Lenin's Russia, 1918-1924 », Journal of Contemporary History, Sage Publications, Inc., vol. 20, no 2, , p. 207 (DOI10.1177/002200948502000201, JSTOR260531, S2CID159699014, lire en ligne, consulté le )
(en) Durham, « British Revolutionaries and the Suppression of the Left in Lenin's Russia, 1918-1924 », Journal of Contemporary History, Sage Publications, Inc., vol. 20, no 2, , p. 214–215 (DOI10.1177/002200948502000201, JSTOR260531, S2CID159699014, lire en ligne, consulté le )
(en) LaPorte et Morgan, « Kings among their subjects'? Ernst Thälmann, Harry Pollitt and the leadership cult as Stalinization », Bolshevism, Stalinism and the Comintern: Perspectives on Stalinization, 1917–53, Palgrave Macmillan, (ISBN978-1-349-28252-4, DOI10.1057/9780230227583_7, S2CID147878826, lire en ligne [archive du ] [PDF], consulté le )