Sinaga, Manasse. “Educating HKBP Maranatha Payung Sekaki Teenagers on the Wise Use of Technology in the Digital Era: A Practical-Theological Perspective”. Global Education Journal 4, no. 2 (August 16, 2026): 2127–2134. Accessed September 15, 2026. https://www.journal.civiliza.org/index.php/gej/article/view/1990.