B. Rianto, A. Muni, C. Chrismondari, Y. Yolnasdi, M. Jalil, and E. Sudeska, “Enhancing Vocational High School Students’ Competitiveness Through National Professional Certification (BNSP) in the Era of Industry 4.0”, J-IbM, vol. 4, no. 2, pp. 168–174, Dec. 2024.