SIMANUNGKALIT, Ate Gueen; MUHALING, Regina Octavia. Mental Health Problems and English Achievement of UNKLAB High School Students. SUMIKOLAH: Jurnal Ilmu Pendidikan, [S.l.], v. 1, n. 1, p. 1-12, jan. 2023. ISSN 2985-3842. Available at: <https://ejournal.unklab.ac.id/index.php/sumikolah/article/view/867>. Date accessed: 04 oct. 2025.