Purwanto, B., N. N. T. Rtamagustini, and H. E. Dharmayanti. “Waist Circumference As a Predictor for Menstrual Cycle Disturbance Among College Student”. Jurnal Ners, vol. 13, no. 2, Mar. 2019, pp. 194-9, doi:10.20473/jn.v13i2.8335.