Wing, M. J. (1997). The Arthur Andersen guide to talking with your customers: What they will tell you about your business (when you ask the right questions). Upstart.
Παραπομπή σε μορφή Chicago (17η εκδ.)Wing, Michael J. The Arthur Andersen Guide to Talking with Your Customers: What They Will Tell You About Your Business (when You Ask the Right Questions). Chicago: Upstart, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)Wing, Michael J. The Arthur Andersen Guide to Talking with Your Customers: What They Will Tell You About Your Business (when You Ask the Right Questions). Upstart, 1997.
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