Lenin: Plenary Meeting of the R.S.D.L.P. Central Committee https://www.marxists.org/archive/lenin/works/1908/aug/13.htm
From naive dialectic to metaphysics https://marxistleninists.org/Reading%20Guide/Marxist%20Philosophy/From%20Naive%20dialectic%20to%20the%20metaphysics.htm
Archive_rosa_luxemburg-karl_liebknecht http://ciml.250x.com/archive/luxemburg-liebknecht/english/rosa_luxemburg_the_militia_and_militarism_1899_extracts_english.html
Lenin, Stalin - On Restoration of Capitalism https://marxistleninists.org/Reading%20Guide/Restoration%20of%20capitalism/index.htm