Faridah, E. .; Kasih, I.; Nugroho, S.; Emilia, E.; Irfan, M.; Mustaqim, R.; Siregar , S.; Hasibuan, N. .; Suganda, M. A.; Suryadi, D. Article RETRACTED Due to Manipulation by the Authors Eficacia Del Desarrollo De Medios M-Gym En El Aprendizaje De La Gimnasia rítmica Para Estudiantes Y Profesores En Indonesia (Effectiveness of M-Gym Media Development in Learning Rhythmic Gymnastics for Students and Lecturers in Indonesia): Article RETRACTED Due to Manipulation by the Authors. Retos 2024, 59, 595-601. https://doi.org/10.47197/retos.v59.107464.