Lund, P. (1971). Investment: The study of an economic aggregate. Oliver and Boyd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLund, Philip. Investment: The Study of an Economic Aggregate. Oliver and Boyd, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLund, Philip. Investment: The Study of an Economic Aggregate. Oliver and Boyd, 1971.
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