Waldinger, R. J., & Schulz, M. S. (2023). The good life: Lessons from the world's longest scientific study of happiness (First Simon & Schuster hardcover edition.). Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWaldinger, Robert J., और Marc S. Schulz. The Good Life: Lessons from the World's Longest Scientific Study of Happiness. First Simon & Schuster hardcover edition. New York: Simon & Schuster, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWaldinger, Robert J., और Marc S. Schulz. The Good Life: Lessons from the World's Longest Scientific Study of Happiness. First Simon & Schuster hardcover edition. Simon & Schuster, 2023.
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