APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.