Dobelli, R. (2013). The art of thinking clearly (First edition.). Harper.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDobelli, Rolf. The Art of Thinking Clearly. First edition. New York, NY: Harper, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDobelli, Rolf. The Art of Thinking Clearly. First edition. Harper, 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.