Harvard Business Review, Daniel Goleman, Richard E. Boyatzis, Annie McKee (2015). “HBR's 10 Must Reads on Emotional Intelligence (with featured article "What Makes a Leader?" by Daniel Goleman)(HBR's 10 Must Reads)”, p.3, Harvard Business Review Press
Marsden Gibson, Charles Bradlaugh (1889*). “Has Humanity Gained from Unbelief?: Two Nights Debate Between Marsden Gibson and Charles Bradlaugh at Newcastle-on-Tyne”
"George Carlin (1937–2008): Legendary Comedian Challenged Status Quo Throughout 50-Year Career". "Democracy Now!" with Amy Goodman, www.democracynow.org. June 24, 2008.