Android-Based Network Services Application Learning Media for Vocational High Schools. - Dony Novaliendry; Asrul Huda; Debi Sanita; Dino Adi Putra; Marsinah Dewi Feiyska Nasution; Rezi Septiardi Putra; Rizka Novri Hidayati (Int. J. Interact. Mob. Technol., 2021)