Dea Okta Viantri, F. M. Simanjuntak, and R. Lumban Siantar, “The Effectiveness of Dark Chocolate Consumption on Dysmenorrhea in Adolescent Girls at SMK Widya Nusantara (Office Management in Business Institutions): Efektivitas Konsumsi Dark Chocolate Terhadap Dismenorea Pada Remaja Putri SMK Widya Nusantara (Manajemen Perkantoran Lembaga Bisnis)”, j. ilm. kesehat., vol. 17, no. 1, pp. 48–54, Mar. 2025.