R. P. Yandi, M. Manullang, E. Asril, R. Novendra, Y. Turnandes, and P. Situmorang, “Integrating IoT-Based Predictive Maintenance into Motorcycle Engineering Instruction: Effects on Vocational Students’ Diagnostic Competence”, Alishlah, vol. 18, no. 1, pp. 655–670, Mar. 2026.