Playfair, W. An inquiry into the permanent causes of the decline and fall of powerful and wealthy nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPlayfair, William. An Inquiry into the Permanent Causes of the Decline and Fall of Powerful and Wealthy Nations.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPlayfair, William. An Inquiry into the Permanent Causes of the Decline and Fall of Powerful and Wealthy Nations.
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