Ruff, H. J. (1979). How to prosper during the coming bad years. Times Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRuff, Howard J. How to Prosper During the Coming Bad Years. New York: Times Books, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRuff, Howard J. How to Prosper During the Coming Bad Years. Times Books, 1979.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.