Futrell, C. (1998). Fundamentals of selling: Customers for life. Boston: Irwin/McGraw-Hill.
Trích dẫn kiểu ChicagoFutrell, Charles. Fundamentals of Selling: Customers for Life. Boston: Irwin/McGraw-Hill, 1998.
Deismireacht MLAFutrell, Charles. Fundamentals of Selling: Customers for Life. Boston: Irwin/McGraw-Hill, 1998.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.