Margarita Permiakova, Olga Vindeker, Irina Ershova, Svetlana Pavlova, Natalya Khon, Irina Dmitrieva, and Valeriya Semkina. “Comparative Study of Hardiness Among Student-Athletes and Non-Athletes”. Revista de Psicología del Deporte (Journal of Sport Psychology) 29, no. 2 (September 30, 2020): 221–229. Accessed November 28, 2024. https://mail.rpd-online.com/index.php/rpd/article/view/3.