Richardson, L. (2006). The Sales Success Handbook. 20 Lessons to Open and Close Sales Now. McGraw Hill Companies Inc.
Trích dẫn kiểu ChicagoRichardson, Linda. The Sales Success Handbook. 20 Lessons to Open and Close Sales Now. McGraw Hill Companies Inc, 2006.
Deismireacht MLARichardson, Linda. The Sales Success Handbook. 20 Lessons to Open and Close Sales Now. McGraw Hill Companies Inc, 2006.
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