Littlehales, N. (2018). Sleep: The myth of 8 hours, the power of naps, and the new plan to recharge your body and mind (First U.S. edition.). Da Capo Lifelong Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLittlehales, Nick. Sleep: The Myth of 8 Hours, the Power of Naps, and the New Plan to Recharge Your Body and Mind. First U.S. edition. New York, NY: Da Capo Lifelong Books, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLittlehales, Nick. Sleep: The Myth of 8 Hours, the Power of Naps, and the New Plan to Recharge Your Body and Mind. First U.S. edition. Da Capo Lifelong Books, 2018.
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