The Italian factory occupations and Biennio Rosso (页面存档备份,存于互联网档案馆) at libcom.org Gramsci: the Turin years (页面存档备份,存于互联网档案馆), by Megan Trudell, International
[2011-11-21]. (原始内容存档于2016-10-05). A libertarian Marxist tendency map | libcom.org. libcom.org. [2023-12-14]. (原始内容存档于2024-03-03) (英语). What is to be Done? Leninism