M.Riyan Prawitama, and Prima Aulia. “Pengaruh Latihan Mental Terhadap Kepercayaan Diri Atlet Sepakbola Akademi Persegat Padang Pariaman”. Jurnal Pendidikan Tambusai 4, no. 3 (November 28, 2020): 3395–3402. Accessed March 28, 2024. https://jptam.org/index.php/jptam/article/view/863.