Filson, S. (1978). Jump into shape: A fast, fun way to physical fitness. F. Watts.
Chicago Style aipamenaFilson, Sidney. Jump into Shape: A Fast, Fun Way to Physical Fitness. New York: F. Watts, 1978.
MLA aipamenaFilson, Sidney. Jump into Shape: A Fast, Fun Way to Physical Fitness. F. Watts, 1978.
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