SIMANUNGKALIT, A. G.; MUHALING, R. O. Mental Health Problems and English Achievement of UNKLAB High School Students. SUMIKOLAH: Jurnal Ilmu Pendidikan, [S. l.], v. 1, n. 1, p. 1–12, 2023. Disponível em: https://nurturagrow.site/index.php/sumikolah/article/view/867. Acesso em: 10 nov. 2025.