Recio Moreno D, Feliz Murias T, Elorza Barbajero J. La formación de árbitros y asistentes de fútbol desde el enfoque flipped learning (Training soccer referees and assistant referees from the flipped learning approach). Retos [Internet]. 2021 Jan. 1 [cited 2026 Jun. 18];39:794-80. Available from: https://revistaretos.org/index.php/retos/article/view/78222