Salim, Rezky Azhari, et al. “Enhancing Vocational Education through Augmented Reality: Android-Based Learning Media for CNC TU-2A Instruction in Technical and Vocational High Schools”. Journal of Engineering Researcher and Lecturer, vol. 4, no. 2, July 2025, pp. 103-14, https://doi.org/10.58712/jerel.v4i2.188.