Air Quotes - Page 92
"Nineteen Minutes". Book by Jodi Picoult, March 6, 2007.
Jim Butcher (2002). “Summer Knight: Book four of The Dresden Files”, p.22, Penguin
James Howard Kunstler (2007). “The Long Emergency: Surviving the End of Oil, Climate Change, and Other Converging Catastrophes of the Twenty-First Cent”, p.16, Grove/Atlantic, Inc.
Sir Isaac Newton (2016). “Delphi Collected Works of Sir Isaac Newton (Illustrated)”, p.990, Delphi Classics
Henry Clay (1843). “The Life and Speeches of the Hon. Henry Clay ...”, p.37
Friedrich Engels (1958). “The condition of the working class in England”
"Letters of the great artists - from Blake to Pollock" edited by Richard Friedenthal, Thames and Hudson, London, (p. 207), 1963.