SUPRAYITNO, Suprayitno Jalan Willem Iskandar,. PENGARUH GAYA MENGAJAR,RENANG GAYA BEBAS DAN KELENTUKAN TERHADAP RENANG GAYA KUPU-KUPU. Jurnal Pendidikan Jasmani Indonesia, [S. l.], v. 10, n. 2, 2015. DOI: 10.21831/jpji.v10i2.5698. Disponível em: https://journal.uny.ac.id/index.php/jpji/article/view/5698. Acesso em: 17 may. 2025.