WIRMAN, R. M., and G. H. WIKNJOSASTRO. “Korelasi Kadar Endothelin-1 Darah Tali Pusat Dan Kerusakan Vaskular Plasenta Pada Pertumbuhan Janin Terhambat”. Indonesian Journal of Obstetrics and Gynecology 32, no. 3 (October 14, 2016). Accessed February 25, 2026. https://www.inajog.com/index.php/journal/article/view/158.