Spencer, A. (2014). The happy life checklist: 654 simple ways to find your bliss (First edition.). Perigee Trade.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpencer, Amy. The Happy Life Checklist: 654 Simple Ways to Find Your Bliss. First edition. New York, New York: Perigee Trade, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpencer, Amy. The Happy Life Checklist: 654 Simple Ways to Find Your Bliss. First edition. Perigee Trade, 2014.
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