[1]
W. Firek, “Assessment of the quality of instructional support of players by the referee during children’s rugby competitions”, in Contemporary problems of physical and health culture, J. E. Kowalska, A. Makarczuk, A. Maszorek-Szymala, and A. Kaźmierczak, Eds. Poland: Lodz University Press, 2022, pp. 95–109. doi: 10.18778/8220-945-7.07.