Saydah A, Fakhruddin Z FZ, Irianti M, M. Nor MN. Validity Test and Practicality Test of Virtual Reality Based Learning Media on Optical Equipment Material. JES [Internet]. 2024 Jul. 24 [cited 2026 Sep. 21];8(3):476-87. Available from: https://jes.ejournal.unri.ac.id/index.php/JES/article/view/161