Hague, D. C. (1971). Pricing in business. Allen and Unwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHague, Douglas Chalmers. Pricing in Business. London: Allen and Unwin, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHague, Douglas Chalmers. Pricing in Business. Allen and Unwin, 1971.
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