Sofiyani, M., R. Dharmawan, and B. Murti. “Risk Factors of Leptospirosis in Klaten, Central Java”. Journal of Epidemiology and Public Health, vol. 3, no. 1, Jan. 2018, pp. 11-24, https://www.jepublichealth.com/index.php/jepublichealth/article/view/60.