SAMUDRA, Prayoga Restu; SUNGKOWO, Sungkowo. Korelasi Antara Motivasi Berpestasi dan Kepercayaan diri Terhadap Prestasi Atlet Renang Mutiara Swimming Club. Jurnal Porkes, [S. l.], v. 9, n. 2, p. 1037–1055, 2026. DOI: 10.29408/porkes.v9i2.34986. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/porkes/article/view/34986. Acesso em: 15 jun. 2026.