Anggara, Ardana Dika, Roemintoyo, and Triana Rejekiningsih. “Optimization of Mobile Learning in Land Surveying Material for Vocational High School Students: A Preliminary Study”. International Journal of Education and Practice 11, no. 2 (April 5, 2023): 244–254. Accessed May 19, 2024. https://archive.conscientiabeam.com/index.php/61/article/view/3332.