The Effect of Dark Chocolate on Primary Dymenoreries In Students at An Nur Ngrukem Islamic Boarding School, Bantul, Yogyakarta: Pengaruh Dark Chocolate Terhadap Dismenore Primer Pada Santri Putri Pondok Pesantren An Nur Ngrukem Bantul Yogyakarta. (2023). Jurnal Kesehatan Masa Depan, 2(3), 173-193. https://jurnal.ruangide.org/JKMD/article/view/105