Harlan, R. C., & Woolfsaon, W. M. (1993). Telemarketing that works: How to create a winning program for your company. Jaico Publishing.
استشهاد بنمط شيكاغوHarlan, Raymond C., و Walter M. Woolfsaon. Telemarketing That Works: How to Create a Winning Program for Your Company. Bombay: Jaico Publishing, 1993.
MLA استشهادHarlan, Raymond C., و Walter M. Woolfsaon. Telemarketing That Works: How to Create a Winning Program for Your Company. Jaico Publishing, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.