Estimurti, Endang Sri, yuni pantiwati, Latipun Latipun, and Bulkani Bulkani. “Development Conceptual and Empirical Validity of Collaboration and Communication Skills Instruments in Sports Learning”. Retos 55 (April 15, 2024): 779–786. Accessed May 20, 2024. https://recyt.fecyt.es/index.php/retos/article/view/105009.