Williamson, J. (1971). The choice of a pivot for parities. International Finance Section, Princeton University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliamson, John. The Choice of a Pivot for Parities. Princeton, N.J: International Finance Section, Princeton University, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilliamson, John. The Choice of a Pivot for Parities. International Finance Section, Princeton University, 1971.
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