Oktaviasari, Khuril Eka. “Relationship of Measles Immunization With Measles in East Java”. Jurnal Berkala Epidemiologi 6, no. 2 (August 30, 2018): 166–173. Accessed December 2, 2024. https://e-journal.unair.ac.id/JBE/article/view/8690.