Calvin, R. J. (2000). Sales management. New York, NY: McGraw-Hill.
Trích dẫn kiểu ChicagoCalvin, Robert J. Sales Management. New York, NY: McGraw-Hill, 2000.
MLA引文Calvin, Robert J. Sales Management. New York, NY: McGraw-Hill, 2000.
警告：這些引文格式不一定是100％准確.