Varma, S. (2024). Practical optimism: The art, science, and practice of exceptional well-being. Avery, an imprint of Penguin Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVarma, Sue. Practical Optimism: The Art, Science, and Practice of Exceptional Well-being. New York: Avery, an imprint of Penguin Random House, 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVarma, Sue. Practical Optimism: The Art, Science, and Practice of Exceptional Well-being. Avery, an imprint of Penguin Random House, 2024.
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