Helin, P. (1988). Psychophysiological activation during performance and competition and the effects of relaxation training and running exercise. University of Kuopio.
Chicago-viite (17. p.)Helin, Pertti. Psychophysiological Activation During Performance and Competition and the Effects of Relaxation Training and Running Exercise. Kuopio: University of Kuopio, 1988.
MLA-viite (8. p.)Helin, Pertti. Psychophysiological Activation During Performance and Competition and the Effects of Relaxation Training and Running Exercise. University of Kuopio, 1988.
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