Calvin, R. J. (2007). Sales management demystified: A Self-Teaching Guide. New York, NY: McGraw-Hill.
Trích dẫn kiểu ChicagoCalvin, Robert J. Sales Management Demystified: A Self-Teaching Guide. New York, NY: McGraw-Hill, 2007.
Deismireacht MLACalvin, Robert J. Sales Management Demystified: A Self-Teaching Guide. New York, NY: McGraw-Hill, 2007.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.