Fourth International. (1993). Socialism or barbarism on the eve of the 21st century: Programmatic Manifesto of the Fourth International.
Chicago-viite (17. p.)Fourth International. Socialism or Barbarism on the Eve of the 21st Century: Programmatic Manifesto of the Fourth International. 1993.
MLA-viite (8. p.)Fourth International. Socialism or Barbarism on the Eve of the 21st Century: Programmatic Manifesto of the Fourth International. 1993.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.