Susanti, Sulis. “Pemetaan Penyakit Pneumonia Di Provinsi Jawa Timur”. Jurnal Biometrika dan Kependudukan (Journal of Biometrics and Population) 5, no. 2 (September 8, 2017): 117–124. Accessed October 4, 2022. https://e-journal.unair.ac.id/JBK/article/view/5843.