“Training of Self-Confidence and Control of Anxiety in Athletes of the U-16 Category of Bogotá D.C”. Impetus 16, no. 1 (June 6, 2022): e-904. Accessed March 7, 2026. https://ojsunillanos.dev5.metabiblioteca.com.co/index.php/impetus/article/view/904.