Oktafirnanda, Yuka, et al. “The Effect Of Warm Chocolate Drinking On Reducing Menstrual Pain In Adolescent Girls At SMP Swasta Yapim Air Bersih”. Jurnal Maternitas Kebidanan, vol. 10, no. 1, Apr. 2025, pp. 133-41, doi:10.34012/jumkep.v10i1.6811.