Friedman, H. J. (2012). The retailer's complete book of selling games and contests: Over 100 selling games for increasing on-the-floor performance. John Wiley & Sons.
Chicago-Zitierstil (17. Ausg.)Friedman, Harry J. The Retailer's Complete Book of Selling Games and Contests: Over 100 Selling Games for Increasing On-the-floor Performance. Hoboken, New Jersey: John Wiley & Sons, 2012.
MLA-Zitierstil (9. Ausg.)Friedman, Harry J. The Retailer's Complete Book of Selling Games and Contests: Over 100 Selling Games for Increasing On-the-floor Performance. John Wiley & Sons, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.