Guillebeau, C. (2014). The happiness of pursuit: Finding the quest that will bring purpose to your life.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGuillebeau, Chris. The Happiness of Pursuit: Finding the Quest That Will Bring Purpose to Your Life. 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGuillebeau, Chris. The Happiness of Pursuit: Finding the Quest That Will Bring Purpose to Your Life. 2014.
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