Ferriss, T. (2010). The 4-hour body: An uncommon guide to rapid fat-loss, incredible sex, and becoming superhuman. Crown Archetype.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFerriss, Timothy. The 4-hour Body: An Uncommon Guide to Rapid Fat-loss, Incredible Sex, and Becoming Superhuman. New York: Crown Archetype, 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFerriss, Timothy. The 4-hour Body: An Uncommon Guide to Rapid Fat-loss, Incredible Sex, and Becoming Superhuman. Crown Archetype, 2010.
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