- ^ Sinclair, Upton, "Note", 'The Jungle, Dover Thrift, pp. viii–x
- ^ Brinkley, Alan (2010). "17: Industrial Supremacy". The Unfinished Nation. McGraw Hill. ISBN 978-0-07-338552-5.
- ^ "Upton Sinclair", Social History (biography), archived from the original (blog) on 2012-05-27.
- ^ Van Wienen, Mark W. (2012). "American socialist triptych: the literary-political work of Charlotte Perkins Gilman, Upton Sinclair, and W.E.B. Du Bois. n.p.". Book Review Digest Plus (H.W. Wilson). University of Michigan Press.
- ^ Upton Sinclair, Spartacus Educational.
- ^ Gottesman, Ronald. "Introduction". The Jungle. Penguin Classics.
- ^ a b c Phelps, Christopher. "The Fictitious Suppression of Upton Sinclair's The Jungle". History News Network. George Mason University. Retrieved January 20, 2014.
- ^ "The Jungle and the Progressive Era | The Gilder Lehrman Institute of American History". www.gilderlehrman.org. 2012-08-28. Retrieved 2017-10-21.
- ^ Bloom, Harold, ed. (2002), Upton Sinclair's The Jungle, Infohouse, pp. 50–51, ISBN 1604138874.
- ^ "Copyright Basics FAQ". Stanford Copyright and Fair Use Center. 2013-03-27. Retrieved 2020-07-08.
- ^ Sinclair, Upton. The Jungle. Project Gutenberg. Retrieved May 8, 2017.
- ^ The Jungle – via Wikisource.
- ^ Sinclair, Upton (1988). The Lost First Edition of Upton Sinclair's The Jungle. Atlanta, GA: St. Lukes Press. ISBN 0918518660.
- ^ Sinclair, Upton (1905). The Jungle: The Uncensored Original Edition. Tucson, AZ: See Sharp Press. p. vi. ISBN 1884365302.
- ^ a b Sullivan, Mark (1996). Our Times. New York: Scribner. p. 222. ISBN 0-684-81573-7.
- ^ Arthur, Anthony (2006), Radical Innocent: Upton Sinclair, New York: Random House, pp. 84–85.
- ^ "Banned and/or Challenged Books from the Radcliffe Publishing Course Top 100 Novels of the 20th Century". American Library Association. March 26, 2013. Retrieved June 14, 2016.
- ^ Oursler, Fulton (1964), Behold This Dreamer!, Boston: Little, Brown, p. 417.
- ^ Roosevelt, Theodore (1951–54) [July 31, 1906], Morison, Elting E (ed.), The Letters, vol. 5, Cambridge, MA: Harvard University Press, p. 340.
- ^ "Sinclair, Upton (1878–1968)". Blackwell Reference Online. Retrieved January 12, 2013.
- ^ Jacobs, Jane (2006), "Introduction", The Jungle, Random House Publishing, ISBN 0-8129-7623-1.
- ^ Hearings Before the Committee on Agriculture... on the So-called "Beveridge Amendment" to the Agricultural Appropriation Bill, U.S. Congress, House, Committee on Agriculture, 1906, p. 102, 59th Congress, 1st Session.
- ^ Hearings Before the Committee on Agriculture... on the So-called "Beveridge Amendment" to the Agricultural Appropriation Bill, U.S. Congress, House, Committee on Agriculture, 1906, pp. 346–50, 59th Congress, 1st Session.
- ^ Roosevelt, Theodore (1906), Conditions in Chicago Stockyards (PDF)
- ^ Young, The Pig That Fell into the Privy, p. 477.
- ^ Sinclair, Upton (1906), "The Condemned-Meat Industry: A Reply to Mr. M. Cohn Armour", Everybody's Magazine, vol. XIV, pp. 612–13.
- ^ Bloom, Harold. editor, Upton Sinclair's The Jungle, Infobase Publishing, 2002, p. 11
- ^ "The Jungle". silentera.com.
- ^ FIONA BRANSON
- ^ Willett, John (1959). The Theatre of Bertolt Brecht: A Study from Eight Aspects. London: Methuen. pp. 36–37. ISBN 0-413-34360-X.
- ^ Squiers, Anthony (2014). An Introduction to the Social and Political Philosophy of Bertolt Brecht: Revolution and Aesthetics. Amsterdam: Rodopi. p. 41. ISBN 9789042038998.
- ^ Sinclair, Upton. "Joslyn T Pine Note". In Negri, Paul (ed.). The Jungle. Dover Thrift. pp. vii–viii.
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