PENGARUH PEMBERIAN VITAMIN C DAN VITAMIN E TERHADAP KADAR HEMOGLOBIN PETUGAS OPERATOR SPBU DI WILAYAH KOTA PEKANBARU. JURNAL PROTEKSI KESEHATAN, [S. l.], v. 6, n. 1, 2018. DOI: 10.36929/jpk.v6i1.367. Disponível em: https://jurnal.pkr.ac.id/JPK/article/view/367. Acesso em: 18 jan. 2026.