Agustin, S., Hanesman, Efrizon, and H. Hidayat. “The Impact of Problem-Based Learning Model With Focus Group Discussion Method on Students’ Learning Outcomes in Basic Vocational Subjects”. Journal of Hypermedia & Technology-Enhanced Learning, vol. 2, no. 2, June 2024, pp. 182-93, doi:10.58536/j-hytel.v2i3.135.