(1987). Staying flexible: The full range of motion. Time-Life Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStaying Flexible: The Full Range of Motion. Alexandria, VA: Time-Life Books, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रStaying Flexible: The Full Range of Motion. Time-Life Books, 1987.
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