S. Ramadani, I. Isnandar, and M. A. Ichwanto, “Analysis of Challenges and Readiness for Competency Certification Testing in the DKV SMKN Tutur Vocational Program”, JES, vol. 10, no. 1, pp. 1560–1574, Jan. 2026, doi: 10.31258/jes.10.1.p.1560-1574.