Mega, Selfia Alke, and Vera Ardiyanti. “Perbandingan Strategi Penanganan Keluhan Pelanggan Antara Erafone Dan Globalindo”. Innovative: Journal Of Social Science Research 5, no. 4 (August 31, 2025): 12193–12207. Accessed August 29, 2026. https://j-innovative.org/index.php/Innovative/article/view/21262.