Knopf, K. G. (2012). Kettlebells for 50+: Safe and customized programs for building & toning every muscle. Ulysses Press ; distributed by Publishers Group West.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKnopf, Karl G. Kettlebells for 50+: Safe and Customized Programs for Building & Toning Every Muscle. Berkeley, CA : [Emeryville, California]: Ulysses Press ; distributed by Publishers Group West, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKnopf, Karl G. Kettlebells for 50+: Safe and Customized Programs for Building & Toning Every Muscle. Ulysses Press ; distributed by Publishers Group West, 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.