Gottfried, S. (2017). Younger: A breakthrough program to reset your reset your genes, reverse aging, and turn back the clock 10 years (First edition.). HarperOne, an imprint of HarperCollinsPublishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGottfried, Sara. Younger: A Breakthrough Program to Reset Your Reset Your Genes, Reverse Aging, and Turn Back the Clock 10 Years. First edition. New York, NY: HarperOne, an imprint of HarperCollinsPublishers, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGottfried, Sara. Younger: A Breakthrough Program to Reset Your Reset Your Genes, Reverse Aging, and Turn Back the Clock 10 Years. First edition. HarperOne, an imprint of HarperCollinsPublishers, 2017.
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