Feiler, B. (2020). Life is in the transitions: Mastering change at any age. Penguin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFeiler, Bruce. Life Is in the Transitions: Mastering Change at Any Age. New York: Penguin Press, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFeiler, Bruce. Life Is in the Transitions: Mastering Change at Any Age. Penguin Press, 2020.
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