Newbold, P. Statistics For Business and Economics,5e. Prentice Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNewbold, Paul. Statistics For Business and Economics,5e. Prentice Hall.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNewbold, Paul. Statistics For Business and Economics,5e. Prentice Hall.
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