Hoesea, Elvan Virgo. “Evaluation of Health Surveillance Activities of Hajj 2013 in the Hajj Embarkation Palangkaraya”. Jurnal Berkala Epidemiologi 2, no. 2 (May 1, 2014): 206–215. Accessed August 3, 2024. https://e-journal.unair.ac.id/JBE/article/view/176.