Wijaya Sipahutar and Fahrul Rozi Lubis (2026) “WEB-BASED CHURCH WORSHIP SERVICE INFORMATION SYSTEM USING THE SPIRAL MODEL: A CASE STUDY OF GKPI AIR BERSIH”, Jurnal Kecerdasan Buatan dan Teknologi Informasi, 5(1), pp. 49–56. doi: 10.69916/jkbti.v5i1.394.