Dukalang, Hendra. “Modeling Infant Mortality Rate With Multivariate Adaptive Regression Spline Approach”. Journal of Applied Informatics and Computing 1, no. 2 (December 30, 2017): 19-28. Accessed January 28, 2020. https://jurnal.polibatam.ac.id/index.php/JAIC/article/view/524.