PERANCANGAN SISTEM PAKAR MENDIAGNOSIS PERMASALAHAN KULIT BESERTA JENIS KULIT WAJAH DALAM PENENTUAN PRODUK PERAWATANNYA MENGGUNAKAN METODE FORWARD CHAINING DAN CERTAINTY FACTOR. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 7, n. 3, p. 1306–1313, 2024. DOI: 10.54314/jssr.v7i3.2131. Disponível em: https://goretanpena.com/jurnal/index.php/JSSR/article/view/2131.. Acesso em: 1 aug. 2026.