Gümüşgül, Ceren, et al. “Investigation of Amateur and Professional Athlete’s Novel Coronavirus (COVID-19) Anxiety – Aspect of Managerial Decision”. Sportif Bakış: Spor Ve Eğitim Bilimleri Dergisi, vol. 7, no. S1, June 2020, pp. 26-37, doi:10.33468/sbsebd.129.