Zephaniah, Gracia, and Rr. Renny Soelistiyowaty. “ Strategi Komunikasi Pemasaran PT Sinar Sosro Gunung Slamat Dalam Mempertahankan Eksistensi Merek Di Era Digital ”. J-CEKI : Jurnal Cendekia Ilmiah 4, no. 6 (September 12, 2025): 154–164. Accessed August 26, 2026. https://al-haramjournal.co.id/J-CEKI/article/view/9975.