Frances Wright (1829). “Course of popular lectures as delivered by Frances Wright: with three addresses on various public occasions, and a reply to the charges against the French reformers of 1789. Second edition”, p.31
Rick Riordan (2013). “Demigods and Monsters: Your Favorite Authors on Rick Riordan's Percy Jackson and the Olympians Series”, p.161, BenBella Books, Inc.
"Christmas 2015 Brings More Misery, Poverty and Dispossession for Bethlehem and Palestinians" by Raouf Halaby, www.counterpunch.org. December 25, 2015.
John Stuart Mill, Thomas Carlyle (2010). “Autobiography of J.S. Mill & on Liberty; Characteristics, Inaugural Address at Edinburgh & Sir Walter Scott”, p.377, Cosimo, Inc.