Septiawan G, Nasution NS, Sumarsono RN. Analisis motivasi siswa dalam mengikuti ekstrakurikuler bola voli. Porkes [Internet]. 2023 Dec. 30 [cited 2024 May 13];6(2):462-84. Available from: https://e-journal.hamzanwadi.ac.id/index.php/porkes/article/view/18782