Whitman, D. B. (2024). The second fifty: Answers to the 7 big questions of midlife and beyond (First edition.). W. W. Norton & Co. Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWhitman, Debra B. The Second Fifty: Answers to the 7 Big Questions of Midlife and Beyond. First edition. New York: W. W. Norton & Co. Inc., 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWhitman, Debra B. The Second Fifty: Answers to the 7 Big Questions of Midlife and Beyond. First edition. W. W. Norton & Co. Inc., 2024.
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