Maryani, Siti, Supriyadi Hari Respati, and Okid Parama Astirin. “Association Between Pregnant Woman Class and Pregnancy Complication in Tegal District, Central Java”. Journal of Maternal and Child Health 1, no. 4 (February 24, 2017): 214–219. Accessed May 5, 2024. http://thejmch.com/index.php/thejmch/article/view/31.