Doloksaribu, Tetty Herta, et al. “The Development of Torbangun Flour-Based Functional Supplementary Food for Breastfeeding Mother”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 23, no. 1, June 2015, pp. 348-55, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4263.