“Efforts to Motivate Youth Indonesian Christian Church of the Royal Family, Salatiga, Central Java in Spiritual Maturity”. SERVIRE: Journal of Research and Service 4, no. 1 (April 30, 2024): 1–17. Accessed November 1, 2026. https://www.jurnal.widyaagape.ac.id/index.php/servire/article/view/207.