Okun, B., & Richardson, R. W. (1961). Studies in economic development. Holt, Rinehart and Winston.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOkun, Bernard, और Richard W. Richardson. Studies in Economic Development. New York: Holt, Rinehart and Winston, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOkun, Bernard, और Richard W. Richardson. Studies in Economic Development. Holt, Rinehart and Winston, 1961.
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