Stevenson, S. (2016). Sleep smarter: 21 essential strategies to sleep your way to a better body, better health, and bigger success. Rodale Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStevenson, Shawn. Sleep Smarter: 21 Essential Strategies to Sleep Your Way to a Better Body, Better Health, and Bigger Success. New York, NY: Rodale Books, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStevenson, Shawn. Sleep Smarter: 21 Essential Strategies to Sleep Your Way to a Better Body, Better Health, and Bigger Success. Rodale Books, 2016.
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