Yulianto, Agung, Mukminan, Dwi Angga Oktavianto, Edi Widodo, and Angelou O. Ramos. “Measuring Geography Online Learning in The First Year Using The Online Learning Quality Index Based on Teachers and Learners’ Perceptions (OLQ-TLP)”. Geosfera Indonesia 9, no. 3 (December 27, 2024): 376–393. Accessed April 29, 2025. https://geosfera.jurnal.unej.ac.id/index.php/GEOSI/article/view/43337.