Thomas L. Friedman, Michael Mandelbaum (2011). “That Used to Be Us: How America Fell Behind in the World It Invented and How We Can Come Back”, p.12, Macmillan
"Hugh Laurie: 'There's a sensual pleasure involved in making music that I just can't get from acting'". Interview with Alexis Petridis, www.theguardian.com. May 5, 2013.