Career Press Inc. (1993). Powerful telephone skills: A quick and handy guide for any manager or business owner. Hawthorne, NJ: Career Press.
Trích dẫn kiểu ChicagoCareer Press Inc. Powerful Telephone Skills: A Quick and Handy Guide for Any Manager or Business Owner. Hawthorne, NJ: Career Press, 1993.
Trích dẫn MLACareer Press Inc. Powerful Telephone Skills: A Quick and Handy Guide for Any Manager or Business Owner. Hawthorne, NJ: Career Press, 1993.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.