^Gauchet, Marcel (1996). "Right and Left". In Nora, Pierre (ed.). Realms of memory: conflicts and divisions. p. 248.
^Schmidt, Michael; Van der Walt, Lucien (2009). Black Flame: The Revolutionary Class Politics of Anarchism and Syndicalism. Counter-Power. Vol. 1. AK Press. p. 128. ISBN978-1-904859-16-1. [...] anarchism is a coherent intellectual and political current dating back to the 1860s and the First International, and part of the labour and left tradition.
^Maass, Alan; Zinn, Howard (2010). The Case for Socialism (Revised ed.). Haymarket Books. p. 164. ISBN978-1608460731. The International Socialist Review is one of the best left-wing journals around...
^Revel, Jean Francois (2009). Last Exit to Utopia. Encounter Books. p. 24. ISBN978-1594032646. In the United States, the word liberal is often used to describe the left wing of the Democratic party.
^Barry, John (2002). International Encyclopedia of Environmental Politics. Taylor & Francis. ISBN978-0415202855. All surveys confirm that environmental concern is associated with green voting...[I]n subsequent European elections, green voters have tended to be more left-leaning...the party is capable of motivating its core supporters as well as other environmentally minded voters of predominantly left-wing persuasion...