Laila, Ani, and Fathunikmah Fathunikmah. “PENGARUH PEMBERIAN VITAMIN C DAN VITAMIN E TERHADAP KADAR HEMOGLOBIN PETUGAS OPERATOR SPBU DI WILAYAH KOTA PEKANBARU”. JPK : Jurnal Proteksi Kesehatan 6, no. 1 (October 23, 2018). Accessed November 23, 2024. https://jurnal.pkr.ac.id/index.php/JPK/article/view/367.