Hendrik Leonard Simanjuntak, Sella Noviyanti Saragih, Karunia Debora Claudia, Domilika Panggabean, and Kartini R. M. Manalu, “GKI GCC; Magang; Aspek Musikal; Aspek Non musikal ”, J-I-P-M-A-S, vol. 6, no. 1, pp. 159-168, Feb. 2025.