Chernikoff, D. (2021). Life, part two: Seven keys to awakening with purpose and joy as you age (First edition.). Shambhala.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChernikoff, David. Life, Part Two: Seven Keys to Awakening with Purpose and Joy as You Age. First edition. Boulder, Colorado: Shambhala, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChernikoff, David. Life, Part Two: Seven Keys to Awakening with Purpose and Joy as You Age. First edition. Shambhala, 2021.
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