Aykroyd, P. (1980). Skills and tactics of gymnastics. Marshall Cavendish.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAykroyd, Peter. Skills and Tactics of Gymnastics. London: Marshall Cavendish, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAykroyd, Peter. Skills and Tactics of Gymnastics. Marshall Cavendish, 1980.
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