Sandra, Retno Aprilia, Edi Sukamto, and Siti Raihanah. “The Relationship Between Age and Anxiety With the Time Interval of the Second Stage of Labor at RSIA Qurrata A’yun in 2022”. Formosa Journal of Science and Technology 2, no. 3 (March 31, 2023): 921–932. Accessed May 5, 2026. https://journal.formosapublisher.org/index.php/fjst/article/view/3134.