SISTEM PAKAR METODE CERTAINTY FACTOR DALAM DIAGNOSA PENYAKIT KANKER KELENJAR GETAH BENING PADA RSUD H. ABDUL MANAN SIMATUPANG. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 4, n. 2, p. 155 –162, 2021. DOI: 10.54314/jssr.v4i2.548. Disponível em: https://goretanpena.com/jurnal/index.php/JSSR/article/view/548.. Acesso em: 3 aug. 2026.