Copeland, M. A. (1952). A study of moneyflows in the United States. National Bureau of Economic Research, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCopeland, Morris Albert. A Study of Moneyflows in the United States. [New York]: National Bureau of Economic Research, Inc, 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCopeland, Morris Albert. A Study of Moneyflows in the United States. National Bureau of Economic Research, Inc, 1952.
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