Latifatul Kamilia, Ahmaniyah Ahmaniyah, Ratna Indriyani, and Emdat Suprayitno. “Cohort Study: Pregnant Exercise With Primigravida Stage II of Labor Delivery”. International Journal of Health Engineering and Technology (IJHET) 1, no. 2 (July 31, 2022). Accessed October 2, 2024. https://afdifaljournal.com/journal/index.php/ijhet/article/view/38.