Lenin: The Constitutional Market-Place https://www.marxists.org/archive/lenin/works/1905/apr/30b.htm
The English Soldier's Oath of Allegance-Marx and Engels https://marxistleninists.org/M&E/1849/03/09.htm
Comintern Archiv: 5 Classics of Marxism-Leninism on the October-Revolution http://ciml.250x.com/archive/5classics/english/5classics_octoberrevolution.html
Economic Manuscripts: Capital Vol. I - Chapter Thirteen http://hiaw.org/defcon6/works/1867-c1/ch13.html