A Case Study of Indonesian Amateur Boxing Athletes: Is There an Influence of Organizational Culture and Quality of Service on Performance through Achievement Motivation as a Mediator? - Dadang Prayoga, Hegen; Tomoliyus; Lumintuarso, Ria; Fitrianto, Ari Tri; Rini Sukamti, Endang; Fauzi; Hariono, Awan; Prabowo, Trisnar Adi (Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación, 2024)