Sunarsih, S. et al. 2026. Association of Physical Activity, Depression, Anxiety, and Stress with Menstrual Cycle Regularity among Adolescents A Cross-Sectional Study. Jurnal Bidan Cerdas. 8, 1 (Mar. 2026). DOI:https://doi.org/10.33860/jbc.v8i1.4246.