1. Bechtel, S. and Stains, L.R. (1997), The Good Luck Book, Workman Publishing, New York, NY.
2. Bernstein, P.L. (1998), Against the Odds: The Remarkable Story of Risk, John Wiley, New York, NY.
3. Brown, S. (2001), Marketing: The Retro Revolution, Sage, London.
4. Brown, S. (2003), Free Gift Inside!!, Capstone, Oxford.
5. Davidson, A. (2002), Smart Luck, Financial Times Prentice Hall, London.