Harlan, R. C., & Woolfsaon, W. M. (1993). Telemarketing that works: How to create a winning program for your company. Jaico Publishing.
Styl ChicagoHarlan, Raymond C., a Walter M. Woolfsaon. Telemarketing That Works: How to Create a Winning Program for Your Company. Bombay: Jaico Publishing, 1993.
Citace podle MLAHarlan, Raymond C., a Walter M. Woolfsaon. Telemarketing That Works: How to Create a Winning Program for Your Company. Jaico Publishing, 1993.
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