Siahaya, Marce, et al. “Risk Factors of Underweight Baby Newborn at Manokwari Regency General Hospital, 2016”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 30, no. 4, Dec. 2016, pp. 370-83, https://gssrr.org/JournalOfBasicAndApplied/article/view/6668.