Sobyanin, F.I., I.F. Isaev, Sh.A. Makashev, and V.V. Krivchenkov. 2022. “Stages of Emergence and Development of Freestyle Wrestling in the West Kazakhstan Region of the Republic of Kazakhstan”. Theory and Practice of Physical Culture, no. 4 (April):57-59. http://tpfk.ru/index.php/TPPC/article/view/189.