Hiebeler, R. (1998). Best Practices: Building your business with customer - focused solutions. Simon & Schuster.
Citazione stile Chigago Style (17a edizione)Hiebeler, Robert. Best Practices: Building Your Business with Customer - Focused Solutions. Simon & Schuster, 1998.
Citatione MLA (9a ed.)Hiebeler, Robert. Best Practices: Building Your Business with Customer - Focused Solutions. Simon & Schuster, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.