1.
Br.Purba DE, Simanjorang RM. Sistem Pakar Diagnosa Gangguan Pencernaan Pada Manusia Menggunakan Metode Certainty Factor. SAINTEK [Internet]. 2022Jan.21 [cited 2026Apr.30];3(2):36-42. Available from: https://ejournal.sisfokomtek.org/index.php/saintek/article/view/208