Stryker, R. (2011). The four desires: Creating a life of purpose, happiness, prosperity, and freedom. Delacorte Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStryker, Rod. The Four Desires: Creating a Life of Purpose, Happiness, Prosperity, and Freedom. New York: Delacorte Press, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStryker, Rod. The Four Desires: Creating a Life of Purpose, Happiness, Prosperity, and Freedom. Delacorte Press, 2011.
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