Dalrymple, D. J. (1982). Sales management: Concepts and cases. John wiley & sons.
Dyfyniad Arddull ChicagoDalrymple, Douglas J. Sales Management: Concepts and Cases. New York: John wiley & sons, 1982.
Dyfyniad MLADalrymple, Douglas J. Sales Management: Concepts and Cases. John wiley & sons, 1982.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.