https://fr.wikipedia.org/wiki/Parti_communiste_ouvrier_d%27Allemagne
https://en.wikipedia.org/wiki/Communist_Workers%27_Party_of_Germany
https://arplan.org/2022/06/04/revolutionary-peoples-war-lauffenberg-wolffheim/
https://libcom.org/article/hoelz-max-1889-1933
https://libcom.org/article/appel-jan-1890-1985
https://libcom.org/article/autobiography-jan-appel
https://libcom.org/article/otto-ruhle-and-german-labour-movement-paul-mattick
https://libcom.org/article/left-wing-splinter-parties-weimar-republic
https://libcom.org/article/lessons-march-action-herman-gorter
https://libcom.org/article/last-words-eugen-levine
https://libcom.org/article/councilist-movement-germany-1914-1935-history-aaud-e-tendency
https://libcom.org/history/what-does-communist-workers-union-want-kaud
https://libcom.org/article/communist-left-and-resolutions-second-congress-communist-international-henriette-roland
https://libcom.org/article/schneider-ernst-wilhelm-1883-1963-aka-ikarus
https://libcom.org/article/theses-role-party-proletarian-revolution-kapd
https://libcom.org/article/weiland-alfred-1906-1978
https://libcom.org/article/bernard-reichenbachthe-kapd-retrospect-interview-member-communist-workers-party-germany
https://en.wikipedia.org/wiki/Communist_Workers%27_Party_of_Germany
https://arplan.org/2022/06/04/revolutionary-peoples-war-lauffenberg-wolffheim/
https://libcom.org/article/hoelz-max-1889-1933
https://libcom.org/article/appel-jan-1890-1985
https://libcom.org/article/autobiography-jan-appel
https://libcom.org/article/otto-ruhle-and-german-labour-movement-paul-mattick
https://libcom.org/article/left-wing-splinter-parties-weimar-republic
https://libcom.org/article/lessons-march-action-herman-gorter
https://libcom.org/article/last-words-eugen-levine
https://libcom.org/article/councilist-movement-germany-1914-1935-history-aaud-e-tendency
https://libcom.org/history/what-does-communist-workers-union-want-kaud
https://libcom.org/article/communist-left-and-resolutions-second-congress-communist-international-henriette-roland
https://libcom.org/article/schneider-ernst-wilhelm-1883-1963-aka-ikarus
https://libcom.org/article/theses-role-party-proletarian-revolution-kapd
https://libcom.org/article/weiland-alfred-1906-1978
https://libcom.org/article/bernard-reichenbachthe-kapd-retrospect-interview-member-communist-workers-party-germany