Über die Wirksamkeit der Sportpsychologie im Leistungssport
(2017). Effects of psychological and psychosocial interventions on sport performance: A meta-analysis. Sports Medicine, 47, 77–99. https://doi.org/10.1007/s40279-016-0552-7
(2017). Effects of psychological and psychosocial interventions on sport performance: A meta-analysis. Sports Medicine, 47, 77–99. https://doi.org/10.1007/s40279-016-0552-7