Rahmah, Soraya, Terrylina Arvinta Monoarfa, and Rizka Zakiah. “Pengaruh Perceived Usefulness, Perceived Ease of Use, Perceived Cost, Dan Self-Regulation Terhadap Subscribe Intention Ruangguru”. Ekopedia: Jurnal Ilmiah Ekonomi 2, no. 3 (July 20, 2026): 5513–5526. Accessed July 22, 2026. https://indojurnal.com/index.php/ekopedia/article/view/4201.