1.
Portillo J, Díaz-Lara J, Pertíñez-Benítez A, Villa-de Gregorio M, Abián P, Bravo-Sánchez A, et al. Validation of an assessment instrument for secondary school teachers of a co-educational sport (kin-ball). Retos [Internet]. 2025 June 27 [cited 2026 Nov. 7];70:269-7. Available from: https://www.revistaretos.org/index.php/retos/article/view/115148