Alexson Kasiaman Harefa, Usman Nasution. Motivasi Berprestasi Siswa Klub Renang Ampibi Pada Massa Pandemi Covid-19 Tahun 2021. JMBG [Internet]. 2023 Apr. 28 [cited 2026 Aug. 16];1(1):19-26. Available from: https://www.jurnal.stokbinaguna.ac.id/index.php/JMBG/article/view/883