Ayla Bicen, Hüseyin Uzunboylu, and Nazim S. Burgul. “Evaluation of Participants’ Opinions on Online Physical Fitness Training”. Revista de Psicología del Deporte (Journal of Sport Psychology) 29, no. 4 (February 25, 2021): 25-32. Accessed March 22, 2023. https://mail.rpd-online.com/index.php/rpd/article/view/224.