By Andrew Payne, etc., John Chelsom, Lawrie Reavill
By S. Kaplan
By Joe Vitale (Hypnotic Marketing, Inc., Wimberley, TX)
By Matthew Dixon, Brent Adamson, Pat Spenner, Nick Toman
By Michael E. Gerber
By Sahar Hashemi, Bobby Hashemi
By James Watt
By Colin Turner
By Martin Wilcox (Center for Creative Leadership), Stephen Rush (Center for Creative Leadership)
By Peter F. Drucker
By Tom Peters
By Jan Sutton, William Stewart
By Vanessa Branson
By Dan McCrum
By Tom Cannon
By Alexander R. Margulis (Cornell University, New York, NY, U.S.A.)
By Russill
By John Smythe, Ruth Saunders
By Edward Lumsdaine, Martin Binks
By Leahy, Terry
By Christy Wright
By Paphitis, Theo
By Michael Goold, etc., Andrew Campbell, Marcus Alexander
By Robin Chase
By John Doerr
By Duncan Bannatyne
By Craig Wallin