Hiebeler, R. (1998). Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster.
Chicago-referens (17:e uppl.)Hiebeler, Robert. Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster, 1998.
MLA-referens (8:e uppl.)Hiebeler, Robert. Best Practices Building Your Business With Customer-focused Solutions Robert Hiebeler, Thomas B. Kelly, Charles Ketteman. Simon & Schuster, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.