PENGARUH PEMBERIAN VITAMIN C DAN VITAMIN E TERHADAP KADAR HEMOGLOBIN PETUGAS OPERATOR SPBU DI WILAYAH KOTA PEKANBARU. JPK : Jurnal Proteksi Kesehatan, [S. l.], v. 14, n. 2, 2018. Disponível em: https://jurnal.polkesri.ac.id/index.php/JPK/article/view/367. Acesso em: 10 jan. 2026.