APA (7 वां संस्करण) प्रशस्ति पत्र

Davis, D. (1996). The Heckscher-Ohlin-Vanek model of trade: Why does it fail? when does it workn. National Bureau of Economics.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Davis, D.R. The Heckscher-Ohlin-Vanek Model of Trade: Why Does It Fail? When Does It Workn. Cambridge: National Bureau of Economics, 1996.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Davis, D.R. The Heckscher-Ohlin-Vanek Model of Trade: Why Does It Fail? When Does It Workn. National Bureau of Economics, 1996.

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