Yumni, R., and Z. Siregar. “Pengaruh Kinerja Instruktur Dan Service Quality Terhadap Kepuasan Peserta Pelatihan BBPVP Medan”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 5, no. 1, Feb. 2026, pp. 3189-95, doi:10.31004/riggs.v5i1.6631.