S. H. Mohd Imam Ma’arof and N. A. Samat, “Standardized Morbidity Ratio and Its Application to Chikungunya Disease Mapping in Malaysia: Standardized Morbidity Ratio dan Aplikasinya Terhadap Pemetaan Penyakit Chikungunya di Malaysia”, J. Sci. Math. Lett., vol. 1, pp. 37–46, Dec. 2013, Accessed: Apr. 06, 2025. [Online]. Available: https://ejournal.upsi.edu.my/index.php/JSML/article/view/4306