Helmiza H, Irfan D, Huda A. Development of Android-Based Network Service Technology Learning Media for Vocational Middle School Students. json [Internet]. 2022 Sep. 30 [cited 2026 Jan. 9];4(1):1-11. Available from: https://ejurnal.stmik-budidarma.ac.id/index.php/JSON/article/view/4384