Rumbauskas, F. J. (2007). Selling Sucks How to Stop Selling and Start Getting Prospects to Buy. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRumbauskas, Frank J. Selling Sucks How to Stop Selling and Start Getting Prospects to Buy. John Wiley & Sons, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRumbauskas, Frank J. Selling Sucks How to Stop Selling and Start Getting Prospects to Buy. John Wiley & Sons, 2007.
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