MAYANGSARI; SIMAIBANG, B. .; MULYADI. The Correlations Among Self-Confidence, Learning Motivation, and Speaking Ability of The Eleventh Grade Students Of State Vocational High School 1 of Talang Ubi Pali. Jurnal Pendidikan Tambusai, [S. l.], v. 5, n. 1, p. 2521–2528, 2021. DOI: 10.31004/jptam.v5i1.1701. Disponível em: https://jptam.org/index.php/jptam/article/view/1701. Acesso em: 3 jul. 2024.