Muna, Lansiana, and Wens Nagul. “A Case Study on Personal Problems of Ninth Grade Students at SMPK Adisucipto Kupang”. TOFEDU: The Future of Education Journal 4, no. 9 (December 16, 2025): 5112–5116. Accessed December 21, 2025. https://journal.tofedu.or.id/index.php/journal/article/view/1272.