“Precompetitive Anxiety in Self-Control of Football Referees of the Association of Pichincha”. Horizontes de Enfermería, no. 7 (December 29, 2018): 54–65. Accessed December 18, 2025. https://www.revistasdigitalesupeceduec35.biteca.online/index.php/enfermeria/article/view/156.