Wahyuntari, E., M. Hakimi, and I. Ismarwati. “Relationship of Social Support With Postpartum Depression in Sadewa Hospital Yogyakarta”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 35, no. 1, July 2017, pp. 76-84, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7744.