Engel, S. L. (2015). The end of the rainbow: How educating for happiness (not money) would transform our schools. The New Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEngel, Susan L. The End of the Rainbow: How Educating for Happiness (not Money) Would Transform Our Schools. New York, New York: The New Press, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEngel, Susan L. The End of the Rainbow: How Educating for Happiness (not Money) Would Transform Our Schools. The New Press, 2015.
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