Galan, Y., O. Andrieieva, O. Yarmak, and O. Shestobuz. “Programming of Physical Education and Health-Improving Classes for the Girls Aged 12-13 Years”. Journal of Human Sport and Exercise, vol. 15, no. 3, Sept. 2020, pp. 525-34, doi:10.14198/jhse.2020.153.05.