Stepanus, Stepanus, AND 		Arinal, Veri.
"A Kalsifikasi Sistem Pakar Mendeteksi Penyakit Asam Lambung Menggunakkan Metode Forward Chaining" <em>Journal of Information System, Applied, Management, Accounting and Research</em> [Online], Volume 6 Number 4 (1 November 2022)