Anggraini, Mia Dwi, and Kolifah -. 2016. “GAMBARAN PENYEBAB TERJADINYA BAYI PREMATUR DI RUANG ANGGREK RSUD JOMBANG: Description Of The Occurrence Causes Premature Infants In The Orchid Hospital Jombang”. Jurnal Ilmiah Kebidanan (Scientific Journal of Midwifery) 2 (1):13-19. https://journal.stikespemkabjombang.ac.id/index.php/jikeb/article/view/59.