SCHMETTERER, Bob. Leap : a revolution in creative business strategy. Hoboken : John Wiley & Sons, Inc., 2003. xii, 241 s. An Adweek Book. ISBN 0-471-22917-2. [Copy count : 3, currently available 2, at library only 1]
SCHMETTERER, Bob. Leap : a revolution in creative business strategy. Hoboken : John Wiley & Sons, Inc., 2002. 273 s. An Adweek Book. [Copy count : 1, currently available 0, at library only 1]
