Goodman, G. S. (1982). Winning by telephone: Telephone effectiveness for business professionals and consumers. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGoodman, Gary S. Winning by Telephone: Telephone Effectiveness for Business Professionals and Consumers. Englewood Cliffs, N.J: Prentice-Hall, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGoodman, Gary S. Winning by Telephone: Telephone Effectiveness for Business Professionals and Consumers. Prentice-Hall, 1982.
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