“Profile of Basic Technique Volleyball Games For Female Students of The Volleyball Extracurricular College Of Gkst Ensa Christian Middle School”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, vol. 17, no. 3, Oct. 2025, pp. 3421-30, https://competitor.idjournal.eu/index.php/competitor/article/view/395.