Παραπομπή APA

 Heil, G. (2006).  Employee management and customer service in the retail industry.  Wiley.

Παραπομπή Chicago Style

 Heil, Gary.  Employee Management and Customer Service in the Retail Industry.  Wiley, 2006.

Παραπομπή MLA

 Heil, Gary.  Employee Management and Customer Service in the Retail Industry.  Wiley, 2006.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.