Priyanto, Priyanto, Herminarto Sofyan, and Herman Dwi Surjono. “The Determinats of E-Learning Usage by Teachers of Vocational High Schools in the Yogyakarta Special Region”. Jurnal Pendidikan Vokasi 7, no. 1 (February 28, 2017): 1–13. Accessed May 9, 2025. https://journal.uny.ac.id/index.php/jpv/article/view/12770.