DALRYMPLE, D. J. (1982). Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDALRYMPLE, Douglas J. Sales Management Concepts And Cases Douglas J. Dalrymple. John Wiley and Sons, 1982.
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