Oon-arom, A., and J. Maneewong. “Oxytocin, breastfeeding, and postpartum depression: A review of the literature”. Biomedical Sciences and Clinical Medicine, vol. 58, no. 2, Apr. 2019, pp. 105-11, https://he01.tci-thaijo.org/index.php/CMMJ-MedCMJ/article/view/152320.