"Smarter Branding Without Breaking the Bank: Five Proven Marketing Strategies You Can Use Right Now to Build Your Business at Little Or No Cost". Book by Brenda Bence (p. 91), November 7, 2011.
"'Our obsession with ownership is at a tipping point': As he gives £1m to UK start-ups Richard Branson reveals why he's backing the sharing economy". Interview with Eleanor Lawrie, www.dailymail.co.uk. June 30, 2016.