Handayani, Ina, and Pudji Suryani. “Senam Hamil, Durasi Tidur Dan Denyut Jantung Janin”. Jurnal Keperawatan Terapan 3, no. 1 (October 29, 2017): 27–30. Accessed December 3, 2025. https://ojs.poltekkes-malang.ac.id/JKT/article/view/15.