Richardson, L. (2006). The sales success handbook: 20 lessons to open and close sales now. New York, NY: McGraw-Hill.
Dyfyniad Arddull ChicagoRichardson, Linda. The Sales Success Handbook: 20 Lessons to Open and Close Sales Now. New York, NY: McGraw-Hill, 2006.
Dyfyniad MLARichardson, Linda. The Sales Success Handbook: 20 Lessons to Open and Close Sales Now. New York, NY: McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.