Bingan, E. C. S. “Perbedaan Lama Pelepasan Tali Pusat Pada Metode Perawatan Tali Pusat Teknik Terbuka Dan Tertutup Di PMB “SF” Palangka Raya: Differences in the Delivery of the Course in the Open Engineering and Closed in PMB ‘SF’ Palangka Raya”. Jurnal Surya Medika (JSM), vol. 7, no. 1, Aug. 2021, pp. 204-8, doi:10.33084/jsm.v7i1.2658.