Bly, R. W. (1997). Secrets of successful telephone selling: How to generate more leads, sales, repeat business, and referrals by phone. Henry Holt.
Citace podle Chicago (17th ed.)Bly, Robert W. Secrets of Successful Telephone Selling: How to Generate More Leads, Sales, Repeat Business, and Referrals by Phone. New York, N.Y.: Henry Holt, 1997.
Citace podle MLA (8th ed.)Bly, Robert W. Secrets of Successful Telephone Selling: How to Generate More Leads, Sales, Repeat Business, and Referrals by Phone. Henry Holt, 1997.
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