, A. “Pengaruh Stres Terhadap Kadar Hormon Progesteron Pada Tikus Wistar Postpartum”. Jurnal Martenity and Neonatal, vol. 2, no. 1, Nov. 2015, pp. 23-29, https://e-journal.upp.ac.id/index.php/akbd/article/view/1087.