PURBA, Nora Desriani; NAINGGOLAN, Diana. Sunday School Service Management in the Huria Kristen Indonesia Sipangan Bolon (Evaluation and Recommendations for Improving Sunday School Ministry). Jurnal Teologi Trinity, [S. l.], v. 2, n. 1, p. 81–93, 2024. DOI: 10.62494/jtt.v2i1.28. Disponível em: https://jurnal.stttrinity.id/index.php/stt/article/view/28.. Acesso em: 6 feb. 2026.