Helin, P. (1988). Psychophysiological activation during performance and competition and the effects of relaxation training and running exercise. University of Kuopio.
Chicago-Zitierstil (17. Ausg.)Helin, Pertti. Psychophysiological Activation During Performance and Competition and the Effects of Relaxation Training and Running Exercise. Kuopio: University of Kuopio, 1988.
MLA-Zitierstil (8. Ausg.)Helin, Pertti. Psychophysiological Activation During Performance and Competition and the Effects of Relaxation Training and Running Exercise. University of Kuopio, 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.