M. E. Siregar, H. . Mayatopani, R. D. . Kurniawan, and D. . Olivia, “Development of a Church Information Management System Using Scrum at HKBP Sola Gratia Kayu Mas Jakarta”, J. Tek. Inform. (JUTIF), vol. 6, no. 5, pp. 2929–2939, Oct. 2025.