Istawati, Rika. “Factors Associated With the Incidence of Anemia in Students of Akbid Helvetia Pekanbaru in 2021”. JPK : Jurnal Proteksi Kesehatan 10, no. 2 (December 22, 2021): 69-77. Accessed November 24, 2024. https://jurnal.pkr.ac.id/index.php/JPK/article/view/341.