Barbosa-Granados, S. (2022) «Ansiedad precompetitiva en nadadores juveniles: análisis desde la percepción del nivel de dificultad competitivo (Precompetitive anxiety in young swimmers: analysis of the perceived competition difficulty)», Retos, 45, pp. 651–659. doi: 10.47197/retos.v45i0.90934.