Indah Tjahjawulan, Dita Rachmasari. Instagram as a Medium for Activating the Ruangguru Brand to Upsurge User’s Loyalty and Engagement. Prosiding Pasca [Internet]. 2025 Nov. 12 [cited 2026 Jan. 12];1(1). Available from: https://jurnal.isbi.ac.id/index.php/prosidingpasca/article/view/4571